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-7(1+5b)+1=253
We move all terms to the left:
-7(1+5b)+1-(253)=0
We add all the numbers together, and all the variables
-7(5b+1)+1-253=0
We add all the numbers together, and all the variables
-7(5b+1)-252=0
We multiply parentheses
-35b-7-252=0
We add all the numbers together, and all the variables
-35b-259=0
We move all terms containing b to the left, all other terms to the right
-35b=259
b=259/-35
b=-7+2/5
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