Question

Запишите уравнения
(38+b)*12=840
14*(p-30)=630
(43-s)*17=289

Answer 1

1)(38+b)*12=840
456+12b=840
12b=840-456
12b=384
b=384/12
b=32

2)14*(p-30)=630
14p-420=630
14p=630-420
14p=210
p=210/14
p=15

3)(43-s)*17=289
731-17s=289
-17s=289-731
-17s= -442
-s =-442/17
-s=-26
s=26