Question

821. 1) -(2x + 1) 1 x
2) 1/2(4х-2)=-7
Срочно помогите
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Answer 1

Ответ:

1)

-2х+1=1-х

-2х+1-1=1-х

-2х=1-х-х

-1х=1

х=-1

2)

1 (4x - 2)/2 = -7

2x - 1 =-7

2x= -7 + 1

2x = - 6

x = -6 / 2

x = -3