7.x-4=3.x+12

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



7.x-4=3.x+12

We move all terms to the left:

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

We get rid of parentheses

7.x-3.x-12-4=0

We add all the numbers together, and all the variables

4x-16=0

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

4x=16

x=16/4

x=4

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