Ответ:

[tex]1)5x + 75 = 10 \\ 5x = - 65 \\ x = - 13[/tex]

[tex]2)4(x + 1) - 7x = 5 \\ 4x + 4 - 7x = 5 \\ - 3x = 1 \\ x = - \frac{1}{3} [/tex]

Ответ:

1. 5х+75=10

5х=10-75

5х=-65

х=-65:5

х=-13

2.4(х+1) -7х=5

4х+4-7х=5

-3х=5-4

-3х=1

х= -1/3