800-30x=300-20x

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Solution for 800-30x=300-20x equation: 



800-30x=300-20x

We move all terms to the left:

800-30x-(300-20x)=0

We add all the numbers together, and all the variables

-30x-(-20x+300)+800=0

We get rid of parentheses

-30x+20x-300+800=0

We add all the numbers together, and all the variables

-10x+500=0

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

-10x=-500

x=-500/-10

x=+50

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