900-25x=400

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Solution for 900-25x=400 equation: 



900-25x=400

We move all terms to the left:

900-25x-(400)=0

We add all the numbers together, and all the variables

-25x+500=0

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

-25x=-500

x=-500/-25

x=+20

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