900-40x=800

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Solution for 900-40x=800 equation: 



900-40x=800

We move all terms to the left:

900-40x-(800)=0

We add all the numbers together, and all the variables

-40x+100=0

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

-40x=-100

x=-100/-40

x=2+1/2

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