7x-12=3+4x

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



7x-12=3+4x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

7x-4x-3-12=0

We add all the numbers together, and all the variables

3x-15=0

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

3x=15

x=15/3

x=5

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