-3=12+5x

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Solution for -3=12+5x equation: 



-3=12+5x

We move all terms to the left:

-3-(12+5x)=0

We add all the numbers together, and all the variables

-(5x+12)-3=0

We get rid of parentheses

-5x-12-3=0

We add all the numbers together, and all the variables

-5x-15=0

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

-5x=15

x=15/-5

x=-3

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