В этом видео решается задача на пропорции с более сложными вычислениями. Это видео - русский перевод лекции "More advanced ratio problem-with Algebra (HD version)" Академии Хана (https://www.khanacademy.org/math/algebra/rational-expressions/ratios_algebra/v/more-advanced-ratio-problem--with-algebra--hd-version) Перевод Веры Богуславской. Наша страница на Facebook - http://www.facebook.com/KhanAcademyRussian This video is a Russian dubbed version of Khan Academy "More advanced ratio problem-with Algebra (HD version)". This video is a translation of a Khan Academy lecture available at https://www.khanacademy.org/math/algebra/rational-expressions/ratios_algebra/v/more-advanced-ratio-problem--with-algebra--hd-version The translarion was made by Vera Boguslavskaya. Join us on https://www.facebook.com/KhanAcademyRussian