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
х:2=150-140
х:2=10
х=10*2
х=20

2)(150-x):2=65
150-х=65*2
150-х=130
х=150-130
х=20

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

4)5•x-600=900
5х=900+600
5х=1500
х=1500:5
х=300

Answer 2

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