Question

1) 3-4х=х-12 2) (х+7)-(3х+5)=2

Answer 1

1) 3-4х=х-12

3+12=х+4х

15=5х

х=3

2) (х+7)-(3х+5)=2

х+7-3х-5=2

2-2х=2

2-2=2х

0=2х

х=0

 

Answer 2

 1) -4x - x = -12 - 3

-5x = -15

x = 3

 

 

2) x+7 - (3x+5) = 2

x+7 - 3x -5 = 2

 

-2x = 0

x = 0