7x-12=3x-20

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Solution for 7x-12=3x-20 equation: 



7x-12=3x-20

We move all terms to the left:

7x-12-(3x-20)=0

We get rid of parentheses

7x-3x+20-12=0

We add all the numbers together, and all the variables

4x+8=0

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

4x=-8

x=-8/4

x=-2

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