9+7a=10+15a

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Solution for 9+7a=10+15a equation: 



9+7a=10+15a

We move all terms to the left:

9+7a-(10+15a)=0

We add all the numbers together, and all the variables

7a-(15a+10)+9=0

We get rid of parentheses

7a-15a-10+9=0

We add all the numbers together, and all the variables

-8a-1=0

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

-8a=1

a=1/-8

a=-1/8

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