-13a+13a=(-15a)+13a=(-10)

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Solution for -13a+13a=(-15a)+13a=(-10) equation: 



-13a+13a=(-15a)+13a=(-10)

We move all terms to the left:

-13a+13a-((-15a)+13a)=0

We add all the numbers together, and all the variables

-((-15a)+13a)=0



We calculate terms in parentheses: -((-15a)+13a), so:

(-15a)+13a

We add all the numbers together, and all the variables

13a+(-15a)

We get rid of parentheses

13a-15a

We add all the numbers together, and all the variables

-2a

Back to the equation:

-(-2a)



We get rid of parentheses

2a=0

a=0/2

a=0

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