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2=b+1/2(-4)
We move all terms to the left:
2-(b+1/2(-4))=0
We multiply all the terms by the denominator
-(b+1+2*2(-4))=0
We calculate terms in parentheses: -(b+1+2*2(-4)), so:We get rid of parentheses
b+1+2*2(-4)
We add all the numbers together, and all the variables
b-15
Back to the equation:
-(b-15)
-b+15=0
We add all the numbers together, and all the variables
-1b+15=0
We move all terms containing b to the left, all other terms to the right
-b=-15
b=-15/-1
b=+15
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