GRINGS - RAZÃO E PROPORÇÃO

★ DONATIONS to maintain Prof.'s class project. GRINGS: http://omatematico.com/contribua-e-aj... Subscribe to the CHANNEL: https://www.youtube.com/user/Omatemat... Visit the website to receive updates: http://www.omatematico.com/ DVD Courses and Links: http://www.lojaomatematico.com.br/ SOCIAL MEDIA: FACEBOOK:   / omatematicocom   INSTAGRAM:   / prof.grings   Contact: [email protected] TIK TOK: https://vm.tiktok.com/J6BWP96/ STUDYING HAS NEVER BEEN SO EASY! 00:00: Welcome to class 00:08: SUBSCRIBE TO THE CHANNEL