3x+20=9x-40

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Solution for 3x+20=9x-40 equation: 



3x+20=9x-40

We move all terms to the left:

3x+20-(9x-40)=0

We get rid of parentheses

3x-9x+40+20=0

We add all the numbers together, and all the variables

-6x+60=0

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

-6x=-60

x=-60/-6

x=+10

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