-3b+4(-3-7b)=-6(2+b)-2b

Solution for -3b+4(-3-7b)=-6(2+b)-2b equation:

-3b+4(-3-7b)=-6(2+b)-2b

We simplify the equation to the form, which is simple to understand 
-3b+4(-3-7b)=-6(2+b)-2b

Reorder the terms in parentheses
-3b+(-12-28b)=-6*(2+b)-2b

Remove unnecessary parentheses
-3b-12-28b=-6+*(+2+b+)-2b

Reorder the terms in parentheses
-3b-12-28b=+(-12-6b)-2b

Remove unnecessary parentheses
-3b-12-28b=-12-6b-2b

We move all terms containing b to the left and all other terms to the right. 
-3b-28b+6b+2b=-12+12

We simplify left and right side of the equation. 
-23b=0

We divide both sides of the equation by -23 to get b. 
b=-0