15+2y=4y+9

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Solution for 15+2y=4y+9 equation: 


Simplifying
15 + 2y = 4y + 9

Reorder the terms:
15 + 2y = 9 + 4y

Solving
15 + 2y = 9 + 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.
15 + 2y + -4y = 9 + 4y + -4y

Combine like terms: 2y + -4y = -2y
15 + -2y = 9 + 4y + -4y

Combine like terms: 4y + -4y = 0
15 + -2y = 9 + 0
15 + -2y = 9

Add '-15' to each side of the equation.
15 + -15 + -2y = 9 + -15

Combine like terms: 15 + -15 = 0
0 + -2y = 9 + -15
-2y = 9 + -15

Combine like terms: 9 + -15 = -6
-2y = -6

Divide each side by '-2'.
y = 3

Simplifying
y = 3

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