140+40x=180+20x

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Solution for 140+40x=180+20x equation: 



140+40x=180+20x

We move all terms to the left:

140+40x-(180+20x)=0

We add all the numbers together, and all the variables

40x-(20x+180)+140=0

We get rid of parentheses

40x-20x-180+140=0

We add all the numbers together, and all the variables

20x-40=0

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

20x=40

x=40/20

x=2

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