5=-2.5a+12.5

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Solution for 5=-2.5a+12.5 equation: 



5=-2.5a+12.5

We move all terms to the left:

5-(-2.5a+12.5)=0

We get rid of parentheses

2.5a-12.5+5=0

We add all the numbers together, and all the variables

2.5a-7.5=0

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

2.5a=7.5

a=7.5/2.5

a=3

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