-4(y-4)=-9y+21

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Solution for -4(y-4)=-9y+21 equation: 



-4(y-4)=-9y+21

We move all terms to the left:

-4(y-4)-(-9y+21)=0

We multiply parentheses

-4y-(-9y+21)+16=0

We get rid of parentheses

-4y+9y-21+16=0

We add all the numbers together, and all the variables

5y-5=0

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

5y=5

y=5/5

y=1

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