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

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


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

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

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

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

Reorder the terms:
20 + 5y = 20 + 7y + -5y

Combine like terms: 7y + -5y = 2y
20 + 5y = 20 + 2y

Add '-20' to each side of the equation.
20 + -20 + 5y = 20 + -20 + 2y

Combine like terms: 20 + -20 = 0
0 + 5y = 20 + -20 + 2y
5y = 20 + -20 + 2y

Combine like terms: 20 + -20 = 0
5y = 0 + 2y
5y = 2y

Solving
5y = 2y

Solving for variable 'y'.

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

Add '-2y' to each side of the equation.
5y + -2y = 2y + -2y

Combine like terms: 5y + -2y = 3y
3y = 2y + -2y

Combine like terms: 2y + -2y = 0
3y = 0

Divide each side by '3'.
y = 0

Simplifying
y = 0

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