400-3x=-100+2x

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Solution for 400-3x=-100+2x equation: 



400-3x=-100+2x

We move all terms to the left:

400-3x-(-100+2x)=0

We add all the numbers together, and all the variables

-3x-(2x-100)+400=0

We get rid of parentheses

-3x-2x+100+400=0

We add all the numbers together, and all the variables

-5x+500=0

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

-5x=-500

x=-500/-5

x=+100

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