Question

Пж помогите срочно дам 25 балов 1) 630:(150-х)=70
2) 35+(b+165)=658. 3) 400×(х-5)=10000 .

Answer 1

1) 630 / (150 - х) = 70

150 - x = 630 / 70

x = 150 - 9

x = 141

2) 35 + (b + 165) = 658

200 + b = 658

b = 658 - 200

b = 458

3) 400 * (х - 5) = 10000

400x - 2000 = 10000

400x = 12000

x = 30