a-(-15)=18

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Solution for a-(-15)=18 equation: 



a-(-15)=18

We move all terms to the left:

a-(-15)-(18)=0

determiningTheFunctionDomain
a-18-(-15)=0

We add all the numbers together, and all the variables

a-3=0

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

a=3

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