x+18=31-

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Solution for x+18=31- equation: 



x+18=31-

We move all terms to the left:

x+18-(31-)=0

We add all the numbers together, and all the variables

x+18-0=0

We add all the numbers together, and all the variables

x+18=0

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

x=-18

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