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b-3(5+4b)=-103
We move all terms to the left:
b-3(5+4b)-(-103)=0
We add all the numbers together, and all the variables
b-3(4b+5)-(-103)=0
We add all the numbers together, and all the variables
b-3(4b+5)+103=0
We multiply parentheses
b-12b-15+103=0
We add all the numbers together, and all the variables
-11b+88=0
We move all terms containing b to the left, all other terms to the right
-11b=-88
b=-88/-11
b=+8
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