Решите уравнение 1 1/4 -(1/15+1/10+x)=3/4 - вопрос №345465011411511034 от kotorosmax1 25.03.2020 18:45

Question

Алгебра: Решите уравнение 1 1/4 -(1/15+1/10+x)=3/4

kotorosmax1 · Answer

1 1/4 - (1/15 + 1/10 + х) = 3/45/4 - (2/30 + 3/30 + х) = 3/4- (5/30 + х) = 3/4 - 5/4- (5/30 + х) = - 2/45/30 + х = 2/41/6 + х = 1/2х = 1/2 - 1/6х = 3/6 - 1/6х = 2/6х = 1/3проверка:1 1/4 - (1/15 + 1/10 + 1/3) = 3/45/4 - (2/30 + 3/30 + 10/30) = 3/45/4 - 15/30 = 3/45/4 - 1/2 = 3/45/4 - 2/4 = 3/43/4 = 3/4...