a+5-7=-2+a

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



a+5-7=-2+a

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

a-(a-2)-2=0

We get rid of parentheses

a-a+2-2=0

We add all the numbers together, and all the variables

=0

a=0/1

a=0

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