Question

Реши уравнения:1)150-x:2=140,2)(150-x):2=65,3)(300-18)•x=1410,4)5•x-600=900

Answer 1

1) 150 - x / 2 = 140
x / 2 = 10
x = 20

2) (150 - x) / 2 = 65
150 - x = 130
x = 20

3) (300 - 18) * x = 1410
282 * x = 1410
x = 5

4) 5 * x - 600 = 900
x - 120 = 180
x = 300