5y-1+y+21=7y+20-4y

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Solution for 5y-1+y+21=7y+20-4y equation:


Simplifying
5y + -1 + y + 21 = 7y + 20 + -4y

Reorder the terms:
-1 + 21 + 5y + y = 7y + 20 + -4y

Combine like terms: -1 + 21 = 20
20 + 5y + y = 7y + 20 + -4y

Combine like terms: 5y + y = 6y
20 + 6y = 7y + 20 + -4y

Reorder the terms:
20 + 6y = 20 + 7y + -4y

Combine like terms: 7y + -4y = 3y
20 + 6y = 20 + 3y

Add '-20' to each side of the equation.
20 + -20 + 6y = 20 + -20 + 3y

Combine like terms: 20 + -20 = 0
0 + 6y = 20 + -20 + 3y
6y = 20 + -20 + 3y

Combine like terms: 20 + -20 = 0
6y = 0 + 3y
6y = 3y

Solving
6y = 3y

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '-3y' to each side of the equation.
6y + -3y = 3y + -3y

Combine like terms: 6y + -3y = 3y
3y = 3y + -3y

Combine like terms: 3y + -3y = 0
3y = 0

Divide each side by '3'.
y = 0

Simplifying
y = 0

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