7-10a+2=9+a

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Solution for 7-10a+2=9+a equation: 



7-10a+2=9+a

We move all terms to the left:

7-10a+2-(9+a)=0

We add all the numbers together, and all the variables

-10a-(a+9)+7+2=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

-10a-a-9+9=0

We add all the numbers together, and all the variables

-11a=0

a=0/-11

a=0

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