25=-2+9a

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Solution for 25=-2+9a equation: 



25=-2+9a

We move all terms to the left:

25-(-2+9a)=0

We add all the numbers together, and all the variables

-(9a-2)+25=0

We get rid of parentheses

-9a+2+25=0

We add all the numbers together, and all the variables

-9a+27=0

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

-9a=-27

a=-27/-9

a=+3

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