X-50=40-2x

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Solution for X-50=40-2x equation: 



X-50=40-2X

We move all terms to the left:

X-50-(40-2X)=0

We add all the numbers together, and all the variables

X-(-2X+40)-50=0

We get rid of parentheses

X+2X-40-50=0

We add all the numbers together, and all the variables

3X-90=0

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

3X=90

X=90/3

X=30

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