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-8(2+5b)=-19
We move all terms to the left:
-8(2+5b)-(-19)=0
We add all the numbers together, and all the variables
-8(5b+2)-(-19)=0
We add all the numbers together, and all the variables
-8(5b+2)+19=0
We multiply parentheses
-40b-16+19=0
We add all the numbers together, and all the variables
-40b+3=0
We move all terms containing b to the left, all other terms to the right
-40b=-3
b=-3/-40
b=3/40
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