7x+7=3x+12

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



7x+7=3x+12

We move all terms to the left:

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

We get rid of parentheses

7x-3x-12+7=0

We add all the numbers together, and all the variables

4x-5=0

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

4x=5

x=5/4

x=1+1/4

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