15+9y=4y

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Solution for 15+9y=4y equation:


Simplifying
15 + 9y = 4y

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

Combine like terms: 9y + -4y = 5y
15 + 5y = 4y + -4y

Combine like terms: 4y + -4y = 0
15 + 5y = 0

Add '-15' to each side of the equation.
15 + -15 + 5y = 0 + -15

Combine like terms: 15 + -15 = 0
0 + 5y = 0 + -15
5y = 0 + -15

Combine like terms: 0 + -15 = -15
5y = -15

Divide each side by '5'.
y = -3

Simplifying
y = -3

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