20-3x=12.5

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Solution for 20-3x=12.5 equation: 



20-3x=12.5

We move all terms to the left:

20-3x-(12.5)=0

We add all the numbers together, and all the variables

-3x+7.5=0

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

-3x=-7.5

x=-7.5/-3

x=2+1/2

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