Y=400+90x

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Solution for Y=400+90x equation: 



=400+90Y

We move all terms to the left:

-(400+90Y)=0

We add all the numbers together, and all the variables

-(90Y+400)=0

We get rid of parentheses

-90Y-400=0

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

-90Y=400

Y=400/-90

Y=-4+4/9

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