3x+20=7x-60

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Solution for 3x+20=7x-60 equation: 



3x+20=7x-60

We move all terms to the left:

3x+20-(7x-60)=0

We get rid of parentheses

3x-7x+60+20=0

We add all the numbers together, and all the variables

-4x+80=0

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

-4x=-80

x=-80/-4

x=+20

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