6y-21-4y+27=21-3y

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Solution for 6y-21-4y+27=21-3y equation:


Simplifying
6y + -21 + -4y + 27 = 21 + -3y

Reorder the terms:
-21 + 27 + 6y + -4y = 21 + -3y

Combine like terms: -21 + 27 = 6
6 + 6y + -4y = 21 + -3y

Combine like terms: 6y + -4y = 2y
6 + 2y = 21 + -3y

Solving
6 + 2y = 21 + -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.
6 + 2y + 3y = 21 + -3y + 3y

Combine like terms: 2y + 3y = 5y
6 + 5y = 21 + -3y + 3y

Combine like terms: -3y + 3y = 0
6 + 5y = 21 + 0
6 + 5y = 21

Add '-6' to each side of the equation.
6 + -6 + 5y = 21 + -6

Combine like terms: 6 + -6 = 0
0 + 5y = 21 + -6
5y = 21 + -6

Combine like terms: 21 + -6 = 15
5y = 15

Divide each side by '5'.
y = 3

Simplifying
y = 3

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