140+.5x=80+.9x

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Solution for 140+.5x=80+.9x equation: 



140+.5x=80+.9x

We move all terms to the left:

140+.5x-(80+.9x)=0

We add all the numbers together, and all the variables

.5x-(.9x+80)+140=0

We get rid of parentheses

.5x-.9x-80+140=0

We add all the numbers together, and all the variables

-0.4x+60=0

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

-0.4x=-60

x=-60/-0.4

x=+150

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