1x+1x=280

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Solution for 1x+1x=280 equation: 



1x+1x=280

We move all terms to the left:

1x+1x-(280)=0

We add all the numbers together, and all the variables

2x-280=0

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

2x=280

x=280/2

x=140

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