4+x+5-x=20;x=3

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Solution for 4+x+5-x=20;x=3 equation: 



4+x+5-x=20x=3

We move all terms to the left:

4+x+5-x-(20x)=0

We add all the numbers together, and all the variables

-20x+9=0

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

-20x=-9

x=-9/-20

x=9/20

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