2y-(1-5y)-21=20

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Solution for 2y-(1-5y)-21=20 equation: 



2y-(1-5y)-21=20

We move all terms to the left:

2y-(1-5y)-21-(20)=0

We add all the numbers together, and all the variables

2y-(-5y+1)-21-20=0

We add all the numbers together, and all the variables

2y-(-5y+1)-41=0

We get rid of parentheses

2y+5y-1-41=0

We add all the numbers together, and all the variables

7y-42=0

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

7y=42

y=42/7

y=6

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