21.25=12.50+b

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Solution for 21.25=12.50+b equation: 



21.25=12.50+b

We move all terms to the left:

21.25-(12.50+b)=0

We add all the numbers together, and all the variables

-(b+12.5)+21.25=0

We get rid of parentheses

-b-12.5+21.25=0

We add all the numbers together, and all the variables

-1b+8.75=0

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

-b=-8.75

b=-8.75/-1

b=8+0.75/1

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