Решите уравнения 1.-1-4(-7+8х)=-2х-6 2.5(5+3х)-10=8 2.4(7+х)-3х=7

Question

Решите уравнения
1.-1-4(-7+8х)=-2х-6
2.5(5+3х)-10=8
2.4(7+х)-3х=7

Answer 1

1) -1-4(-7+8х)=-2х-6
-1+28-32х=-2х-6
27-32х=-2х-6
-32х+2х=-6-27
-30х=-33
х=33/30
х=11/10
Ответ:11/10

Comments

5(5+3х)-10=8

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25+15х-10=8

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15+15х=8 15х=15-8 15х=7 х=7/15