7x-20-x=2x

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Solution for 7x-20-x=2x equation: 



7x-20-x=2x

We move all terms to the left:

7x-20-x-(2x)=0

We add all the numbers together, and all the variables

4x-20=0

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

4x=20

x=20/4

x=5

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