20 MENIT BAHAS TUNTAS BILANGAN BULAT KELAS 7

The first math topic learned in junior high school is integers, a topic already covered in elementary school. So, this topic revisits and recalls elementary school lessons... Do you still remember? Let's discuss this together 😊 Discussion for example problems on adding/subtracting integers: ✓ -12 - 15 = -27 (equal sign and negative, added) ✓ 12 + 9 = 21 (equal sign and positive, added) ✓ (-27) + (-11) = -27 - 11 = -38 (equal sign and negative, added) ✓ 21 - (-8) = 21 + 8 = 29 (minus meets minus, becomes plus, becomes equal sign and positive, added) ✓ -34 - (-13) = -34 + 13 = -21 (minus meets minus, becomes plus, becomes difference sign, subtracted) Don't forget, if there are overlapping signs, they must be changed first. • If a negative sign meets a positive, change it first to negative (-) • If a negative sign meets a negative, change it first to negative (-) positive (+) #math #7thsmp #integers #AtHome #Learning #FromAnywhere