3x+4=6x-8=7x-20=0

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Solution for 3x+4=6x-8=7x-20=0 equation: 



3x+4=6x-8=7x-20=0

We move all terms to the left:

3x+4-(6x-8)=0

We get rid of parentheses

3x-6x+8+4=0

We add all the numbers together, and all the variables

-3x+12=0

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

-3x=-12

x=-12/-3

x=+4

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