7+(10+5)=(7+10)+a

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Solution for 7+(10+5)=(7+10)+a equation: 



7+(10+5)=(7+10)+a

We move all terms to the left:

7+(10+5)-((7+10)+a)=0

We add all the numbers together, and all the variables

-(17+a)+7+15=0

We add all the numbers together, and all the variables

-(17+a)+22=0

We get rid of parentheses

-a-17+22=0

We add all the numbers together, and all the variables

-1a+5=0

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

-a=-5

a=-5/-1

a=+5

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