Y=(-5)x+21

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Solution for Y=(-5)x+21 equation: 



=(-5)Y+21

We move all terms to the left:

-((-5)Y+21)=0



We calculate terms in parentheses: -((-5)Y+21), so:

(-5)Y+21

We multiply parentheses

-5Y+21

Back to the equation:

-(-5Y+21)



We get rid of parentheses

5Y-21=0

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

5Y=21

Y=21/5

Y=4+1/5

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