(-3)+x=12

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Solution for (-3)+x=12 equation: 



(-3)+x=12

We move all terms to the left:

(-3)+x-(12)=0

determiningTheFunctionDomain
x-12+(-3)=0

We add all the numbers together, and all the variables

x-15=0

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

x=15

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