6+12=x+3

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Solution for 6+12=x+3 equation: 



6+12=x+3

We move all terms to the left:

6+12-(x+3)=0

We add all the numbers together, and all the variables

-(x+3)+18=0

We get rid of parentheses

-x-3+18=0

We add all the numbers together, and all the variables

-1x+15=0

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

-x=-15

x=-15/-1

x=+15

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