20-2x;x=3

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Solution for 20-2x;x=3 equation: 



20-2xx=3

We move all terms to the left:

20-2xx-(3)=0

We add all the numbers together, and all the variables

-2xx+17=0

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

-2xx=-17

x=-17/1

x=-17

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