9-10a+7=10-8a

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Solution for 9-10a+7=10-8a equation: 



9-10a+7=10-8a

We move all terms to the left:

9-10a+7-(10-8a)=0

We add all the numbers together, and all the variables

-10a-(-8a+10)+9+7=0

We add all the numbers together, and all the variables

-10a-(-8a+10)+16=0

We get rid of parentheses

-10a+8a-10+16=0

We add all the numbers together, and all the variables

-2a+6=0

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

-2a=-6

a=-6/-2

a=+3

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