Question

помагите пжжжжжжжжжжжжжжж

Answer 1

(3b+28):25=4
3b+28=4×25
3b+28=100
3b=100-28
3b=72
b=72:3
b=24

(3×a):4=15
3×a=15×4
3×a=60
a=60:3
a=20

(16×a-24):6=12
16×a-24=12×6
16×a-24=72
16×a=72+24
16×a=96
a=96:16
a=6