140+40x=100+50x

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Solution for 140+40x=100+50x equation: 



140+40x=100+50x

We move all terms to the left:

140+40x-(100+50x)=0

We add all the numbers together, and all the variables

40x-(50x+100)+140=0

We get rid of parentheses

40x-50x-100+140=0

We add all the numbers together, and all the variables

-10x+40=0

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

-10x=-40

x=-40/-10

x=+4

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