a+5+2=7+a

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Solution for a+5+2=7+a equation: 



a+5+2=7+a

We move all terms to the left:

a+5+2-(7+a)=0

We add all the numbers together, and all the variables

a-(a+7)+5+2=0

We add all the numbers together, and all the variables

a-(a+7)+7=0

We get rid of parentheses

a-a-7+7=0

We add all the numbers together, and all the variables

=0

a=0/1

a=0

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