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4b-7b=-6-2b
We move all terms to the left:
4b-7b-(-6-2b)=0
We add all the numbers together, and all the variables
4b-7b-(-2b-6)=0
We add all the numbers together, and all the variables
-3b-(-2b-6)=0
We get rid of parentheses
-3b+2b+6=0
We add all the numbers together, and all the variables
-1b+6=0
We move all terms containing b to the left, all other terms to the right
-b=-6
b=-6/-1
b=+6
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