Предмет: Алгебра, автор: 4ZDaniilZ4

Помогите решить..... (нужно решить все)
на 1 картинке нужно сократить дробь
на 2 решить уравнения
Очень нужно!!!

Приложения:

Ответы

Автор ответа: lidochka085
0
(х-4)/2 - (7-х)/3 =2
3х-12-14+2х=12
5х=12+12-14
5х=10
х=10/5
х=2

(4х-1)/5=7/(3х+5)
12х²+17х-5=35
12х²+17х-40=0
д=17²+4*12*40=2209=47²
х1=(-17-47)/2*12=-8/3
х2=(-17+47)/2*12=30/24=5/4

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