4x-140=40-2x

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Solution for 4x-140=40-2x equation: 



4x-140=40-2x

We move all terms to the left:

4x-140-(40-2x)=0

We add all the numbers together, and all the variables

4x-(-2x+40)-140=0

We get rid of parentheses

4x+2x-40-140=0

We add all the numbers together, and all the variables

6x-180=0

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

6x=180

x=180/6

x=30

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