20x-800=100x-1200

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Solution for 20x-800=100x-1200 equation: 



20x-800=100x-1200

We move all terms to the left:

20x-800-(100x-1200)=0

We get rid of parentheses

20x-100x+1200-800=0

We add all the numbers together, and all the variables

-80x+400=0

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

-80x=-400

x=-400/-80

x=+5

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