Question

1.) 7+7/9x=−42 2.) 4x+1=−15 3.)−4(x−3)=−40

Answer 1

1) x= -1/27

2) x=-4

3) x=13

Explanation:

1) 7+7/9x= = -42

14/9x= = -42

14/9x X 9x= -42 X 9x

14= -378x

-378x= 14

-378x/-378= 14/-378

x= -1/27

2) 4x+1=−15

4x+1-1=-15-1

4x=-16

4x/4= -16/4

x=-4

3) −4(x−3)=−40

-4(x-3)/-4= -40/4

x-3=10

x-3+3=10+3

x=13