20x+100=30x-200

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Solution for 20x+100=30x-200 equation: 



20x+100=30x-200

We move all terms to the left:

20x+100-(30x-200)=0

We get rid of parentheses

20x-30x+200+100=0

We add all the numbers together, and all the variables

-10x+300=0

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

-10x=-300

x=-300/-10

x=+30

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