Question

(15b+b):4=3
(0,87m-0,66m)*10:2:3=0

Answer 1

15b+b=4*3

16b=12

b=12/16

b=0.75

Ответ=0,75

2) 0,87m-0,66m=0

m=0

Answer 2

16b=4•3
16b=12
B=12:16
B=0,75

(0,87-0,66)m•10:2:3=0
0,21m•10:2=0•3
2,1m:2=0
2,1m=0•2
2,1m=0
m=0:2,1
m=0

Answer 3

пс

Answer 4

спс

Answer 5

;-)