280=2x+3x

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Solution for 280=2x+3x equation: 



280=2x+3x

We move all terms to the left:

280-(2x+3x)=0

We add all the numbers together, and all the variables

-(+5x)+280=0

We get rid of parentheses

-5x+280=0

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

-5x=-280

x=-280/-5

x=+56

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