x+40=9x-20

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



x+40=9x-20

We move all terms to the left:

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

We get rid of parentheses

x-9x+20+40=0

We add all the numbers together, and all the variables

-8x+60=0

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

-8x=-60

x=-60/-8

x=7+1/2

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