Question

 3b+6+4b-4=  -6-6+(b+6)=  5b+4(b-2)=  b-5+4b-8=   5b-3(b+2)= 

 

Answer 1

3b+6+4b-4=7b+2
-6-6+(b+6)=-6-6+b+b=b-6
5b+4(b-2)=5b+4b-8=9b-8
5b-3(b+2)=5b-3b-6=2b-6

Answer 2

в 6

Answer 3

:-)

Answer 4

я в 8