3x-20=x-80

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Solution for 3x-20=x-80 equation: 



3x-20=x-80

We move all terms to the left:

3x-20-(x-80)=0

We get rid of parentheses

3x-x+80-20=0

We add all the numbers together, and all the variables

2x+60=0

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

2x=-60

x=-60/2

x=-30

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