9y-15=3(y+1)

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Solution for 9y-15=3(y+1) equation:


Simplifying
9y + -15 = 3(y + 1)

Reorder the terms:
-15 + 9y = 3(y + 1)

Reorder the terms:
-15 + 9y = 3(1 + y)
-15 + 9y = (1 * 3 + y * 3)
-15 + 9y = (3 + 3y)

Solving
-15 + 9y = 3 + 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.
-15 + 9y + -3y = 3 + 3y + -3y

Combine like terms: 9y + -3y = 6y
-15 + 6y = 3 + 3y + -3y

Combine like terms: 3y + -3y = 0
-15 + 6y = 3 + 0
-15 + 6y = 3

Add '15' to each side of the equation.
-15 + 15 + 6y = 3 + 15

Combine like terms: -15 + 15 = 0
0 + 6y = 3 + 15
6y = 3 + 15

Combine like terms: 3 + 15 = 18
6y = 18

Divide each side by '6'.
y = 3

Simplifying
y = 3

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