20-2(4-y)=y+9

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Solution for 20-2(4-y)=y+9 equation: 



20-2(4-y)=y+9

We move all terms to the left:

20-2(4-y)-(y+9)=0

We add all the numbers together, and all the variables

-2(-1y+4)-(y+9)+20=0

We multiply parentheses

2y-(y+9)-8+20=0

We get rid of parentheses

2y-y-9-8+20=0

We add all the numbers together, and all the variables

y+3=0

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

y=-3

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