Предмет: Алгебра, автор: super0Lena270577

Решите уравнение)
2х-3/5=9/10
х+3/2=3х-2/7

Ответы

Автор ответа: маслёнок95
0
первое уравнение:
приведем все к общему знаменателю, т.е. к 10, для этого 2х умножим на 10, 3/5 умножить на 2, а 9/10 так и останется:
20х-6-9=0
20х=15
х=3/4
второе уравнение:
приведем подобные:
2х-25/14=0
таким же способом приводим к общему знаменателю 14
28х-25=0
х=25/28
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