Question

Решите уравнения: 1) (38+b)*12=840 2) 14(p-30)=630 3) (43-s)*17=289

Answer 1

1) b = 840/12 - 38 = 32

2) p = 630/14 + 30 = 75

3) s = - 43 - 289/17 = 26

 

 

 

 

Answer 2

1)456+13b=840

12b=384

b=32

 

2)14p-420=630

14p=210

p=15

 

3)731-17s=289

-17s=-442

s=26