18=3(y+9)

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Solution for 18=3(y+9) equation:


Simplifying
18 = 3(y + 9)

Reorder the terms:
18 = 3(9 + y)
18 = (9 * 3 + y * 3)
18 = (27 + 3y)

Solving
18 = 27 + 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.
18 + -3y = 27 + 3y + -3y

Combine like terms: 3y + -3y = 0
18 + -3y = 27 + 0
18 + -3y = 27

Add '-18' to each side of the equation.
18 + -18 + -3y = 27 + -18

Combine like terms: 18 + -18 = 0
0 + -3y = 27 + -18
-3y = 27 + -18

Combine like terms: 27 + -18 = 9
-3y = 9

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

Simplifying
y = -3

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