Question

помогите решить уровнения!!!
6х-60=120
450-3х=150

Answer 1

1)6x-60=120
6x=120+60
6x=180
x=30

2)450-3x=150
-3x=150-450
-3x=-300
x=100

Answer 2

6х-60=120
6x = 120+60
6x = 180
x = 180:6
x - 30
------------------------
6*30-60=120
180-60=120
 120 = 120


450-3х=150
3x = 450-150
3x = 300
x = 100
------------------------------
450 - 3*100 = 150
450 - 300 = 150
   150 = 150