15a-(-a)=16

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Solution for 15a-(-a)=16 equation: 



15a-(-a)=16

We move all terms to the left:

15a-(-a)-(16)=0

We add all the numbers together, and all the variables

15a-(-1a)-16=0

We get rid of parentheses

15a+1a-16=0

We add all the numbers together, and all the variables

16a-16=0

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

16a=16

a=16/16

a=1

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