280-40x=170-20x

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Solution for 280-40x=170-20x equation: 



280-40x=170-20x

We move all terms to the left:

280-40x-(170-20x)=0

We add all the numbers together, and all the variables

-40x-(-20x+170)+280=0

We get rid of parentheses

-40x+20x-170+280=0

We add all the numbers together, and all the variables

-20x+110=0

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

-20x=-110

x=-110/-20

x=5+1/2

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