Question

2•(b+4)-1=-3 help me please

Answer 1

2•(b+4)-1=-3
2b+8-1+3=0
2b=-10
b=-5

Answer 2

спасибо

Answer 3

2b+8-1=-3 2b+7=-3 2b=-3-7 2b=-10 b=-10:2 b=-5