2 1/2y-1.27=3/4y-4.77

Question

2 1/2y-1.27=3/4y-4.77

Answer 1

2 1/2у - 1,27 = 3/4у - 4,77                   2 1/2 = 2,5        3/4 = 0,75

2,5у - 0,75у = - 4,77 + 1,27

1,75у = - 3,5

у = - 3,5 : 1,75

у = - 2

Проверка: 2,5 * (-2) - 1,27 = 0,75 * (-2) - 4,77

                 - 5 - 1,27 = -  1,5 - 4,77

                 - 6,27 = - 6,27

Ответ: у = - 2.