【中２　数学】　連立方程式３　加減法２　（１７分）

Watch unlimited lessons from Try's talented instructors for free! The Try IT video lessons for junior high and high school students are designed to be easy to understand! You can use them for school preparation and review, as well as for regular tests and exam preparation. Lessons are taught by experienced, top-notch instructors known for their engaging and easy-to-understand teaching methods. *This lesson was created under the old curriculum. *Please watch with caution when using it to prepare for entrance exams or regular tests under the new curriculum. If you watch the video and think, "This is easy to understand!" or "I want to take a class like this!" Try's one-on-one instruction might be right for you. For more information about Try's one-on-one tutoring service, to request information, or to inquire, please click here. https://bit.ly/4hjhKSE In addition, +‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥+ Try offers free video lessons, "Try IT," to support home learning. "Try IT" is available free of charge even to non-members. Please use this to enhance your exam preparation and home study. Video Lessons: Try IT Official Website: https://bit.ly/4jLULBg +‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥+ This video lesson covers "Junior High School Year 2 Math: Simultaneous Equations 3, Addition and Subtraction 2" in approximately 17 minutes. The key to solving the problem is to "align the coefficients by multiplying them." Please watch the video lesson in the following order: [Key Points] ⇒ [Example Problems] ⇒ [Practice] ⇒ [Summary]. If you have questions about any other units besides this one, please click on the URL below. You can watch all the video lessons for each unit together. ■If you have questions about "Junior High School Year 1 Math," click here! ・1st Year Junior High School Math: Positive and Negative Numbers https://goo.gl/ZYh7oF ・1st Year Junior High School Math: Addition and Subtraction https://goo.gl/fPdVf2 ・1st Year Junior High School Math: Multiplication and Division https://goo.gl/W5TfW1 ・1st Year Junior High School Math: Arithmetic Operations https://goo.gl/IKTZTB ・1st Year Junior High School Math: Letters and Expressions https://goo.gl/44YCfW ・1st Year Junior High School Mathematics: Word Problems and Geometry Problems https://goo.gl/UylVQs ・Junior High School Math: Equations with Letters https://goo.gl/iij9FU ・Junior High School Math: Equations and Inequalities https://goo.gl/bqV2sz ・Junior High School Math: Equations https://goo.gl/s8FoQA ・Junior High School Math: Rearranging Equations, etc. https://goo.gl/pUdpM9 ・Junior High School Math: Equation Word Problems https://goo.gl/xlIUKW ・Junior High School Math: Proportional and Inverse Proportional https://goo.gl/JkX9ha ・Junior High School Math: Proportional Graphs https://goo.gl/5zu5Jo ・Junior High School Math: Inverse Proportional Graphs https://goo.gl/ZYo2qY ・Junior High School Math: Proportional and Inverse Proportional Word Problems https://goo.gl/hHBNx0 ・Junior High School Math: Plane Figures https://goo.gl/Pb7d0R ・Junior High School Math: Spatial Figures https://goo.gl/WQEAM9 ・Junior High School Math: Data Dispersion and Representative Values https://goo.gl/36I3JV ・Junior High School Math: Approximate Values ​​and Significant Figures https://goo.gl/Kxj7uE ■If you have any questions about "Junior High School Math," please click here! ・Junior High School Math: Expression Calculation https://goo.gl/0kYGrD ・Junior High School Math: Monomial Calculation https://goo.gl/Zj7REc ・Junior High School Math: Multiplication and Division of Algebraic Expressions https://goo.gl/2h0Mj3 ・Junior High School Math: Simultaneous Equations https://goo.gl/kQyDvt ・Junior High School Math: Word Problems with Simultaneous Equations https://goo.gl/MB g0ha ・Junior High School Math: Linear Functions https://goo.gl/2QCSNd ・Junior High School Math: Graphs of Linear Functions https://goo.gl/z8xJPb ・Junior High School Math: Equations of Lines https://goo.gl/GV6bi7 ・Junior High School Math: Linear Equations with Two Variables https://goo.gl/PxH6HO ・Junior High School Math: Linear Function Word Problems https://goo.gl/ eILPkI ・Junior High School Math: Properties of Geometric Shapes https://goo.gl/8V4rbJ ・Junior High School Math: Congruence of Geometric Shapes https://goo.gl/RZCuIr ・Junior High School Math: Tips for Proving Geometric Shapes https://goo.gl/C4FXWD ・Junior High School Math: Triangle Proofs https://goo.gl/bIKD6R ・Junior High School Math: Parallelogram Proofs https://goo.gl/G8PYjO ・Junior High School Math: The Relationship Between Triangles and Quadrilaterals https://goo.gl/hdSWgb ・Junior High School Math: Probability https://goo.gl/qLyj7y ・Junior High School Math: Probability and Combinatorics https://goo.gl/84wAvC ・Junior High School Math: Probability and Complementary Events https://goo.gl/vSVtLb ■If you have questions about "Junior High School Math," click here! ・Junior High School 3rd Year Math: Calculating Monomials and Polynomials and Multiplication...