8x-40=4x+20

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Solution for 8x-40=4x+20 equation: 



8x-40=4x+20

We move all terms to the left:

8x-40-(4x+20)=0

We get rid of parentheses

8x-4x-20-40=0

We add all the numbers together, and all the variables

4x-60=0

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

4x=60

x=60/4

x=15

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