3x+x-5=3x+7

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Solution for 3x+x-5=3x+7 equation: 



3x+x-5=3x+7

We move all terms to the left:

3x+x-5-(3x+7)=0

We add all the numbers together, and all the variables

4x-(3x+7)-5=0

We get rid of parentheses

4x-3x-7-5=0

We add all the numbers together, and all the variables

x-12=0

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

x=12

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