3(y+3)=y+15

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Solution for 3(y+3)=y+15 equation:


Simplifying
3(y + 3) = y + 15

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

Reorder the terms:
9 + 3y = 15 + y

Solving
9 + 3y = 15 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
9 + 3y + -1y = 15 + y + -1y

Combine like terms: 3y + -1y = 2y
9 + 2y = 15 + y + -1y

Combine like terms: y + -1y = 0
9 + 2y = 15 + 0
9 + 2y = 15

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

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

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

Divide each side by '2'.
y = 3

Simplifying
y = 3

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