10-3(9+2)=8+a

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Solution for 10-3(9+2)=8+a equation: 



10-3(9+2)=8+a

We move all terms to the left:

10-3(9+2)-(8+a)=0

We add all the numbers together, and all the variables

-(a+8)+10-311=0

We add all the numbers together, and all the variables

-(a+8)-301=0

We get rid of parentheses

-a-8-301=0

We add all the numbers together, and all the variables

-1a-309=0

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

-a=309

a=309/-1

a=-309

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