3x+7=12-4x

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Solution for 3x+7=12-4x equation: 



3x+7=12-4x

We move all terms to the left:

3x+7-(12-4x)=0

We add all the numbers together, and all the variables

3x-(-4x+12)+7=0

We get rid of parentheses

3x+4x-12+7=0

We add all the numbers together, and all the variables

7x-5=0

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

7x=5

x=5/7

x=5/7

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