20-2x=22.5

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Solution for 20-2x=22.5 equation: 



20-2x=22.5

We move all terms to the left:

20-2x-(22.5)=0

We add all the numbers together, and all the variables

-2x-2.5=0

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

-2x=2.5

x=2.5/-2

x=-1+0.5/2

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