8-b=12.5

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Solution for 8-b=12.5 equation: 



8-b=12.5

We move all terms to the left:

8-b-(12.5)=0

We add all the numbers together, and all the variables

-1b-4.5=0

We move all terms containing b to the left, all other terms to the right

-b=4.5

b=4.5/-1

b=-4+0.5/1

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