9a+15=10a-

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Solution for 9a+15=10a- equation: 



9a+15=10a-

We move all terms to the left:

9a+15-(10a-)=0

We add all the numbers together, and all the variables

9a-(+10a)+15=0

We get rid of parentheses

9a-10a+15=0

We add all the numbers together, and all the variables

-1a+15=0

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

-a=-15

a=-15/-1

a=+15

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