12+7-4=8+x

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Solution for 12+7-4=8+x equation: 



12+7-4=8+x

We move all terms to the left:

12+7-4-(8+x)=0

We add all the numbers together, and all the variables

-(x+8)+12+7-4=0

We add all the numbers together, and all the variables

-(x+8)+15=0

We get rid of parentheses

-x-8+15=0

We add all the numbers together, and all the variables

-1x+7=0

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

-x=-7

x=-7/-1

x=+7

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