4000-x=1440

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Solution for 4000-x=1440 equation: 



4000-x=1440

We move all terms to the left:

4000-x-(1440)=0

We add all the numbers together, and all the variables

-1x+2560=0

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

-x=-2560

x=-2560/-1

x=+2560

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