3-2y=4y+21

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Solution for 3-2y=4y+21 equation:


Simplifying
3 + -2y = 4y + 21

Reorder the terms:
3 + -2y = 21 + 4y

Solving
3 + -2y = 21 + 4y

Solving for variable 'y'.

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

Add '-4y' to each side of the equation.
3 + -2y + -4y = 21 + 4y + -4y

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

Combine like terms: 4y + -4y = 0
3 + -6y = 21 + 0
3 + -6y = 21

Add '-3' to each side of the equation.
3 + -3 + -6y = 21 + -3

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

Combine like terms: 21 + -3 = 18
-6y = 18

Divide each side by '-6'.
y = -3

Simplifying
y = -3

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