(Y-3)-(y+4)=9y

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Solution for (Y-3)-(y+4)=9y equation: 



(-3)-(Y+4)=9Y

We move all terms to the left:

(-3)-(Y+4)-(9Y)=0

We add all the numbers together, and all the variables

-9Y-(Y+4)-3=0

We get rid of parentheses

-9Y-Y-4-3=0

We add all the numbers together, and all the variables

-10Y-7=0

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

-10Y=7

Y=7/-10

Y=-7/10

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