18=-9-3y

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Solution for 18=-9-3y equation:


Simplifying
18 = -9 + -3y

Solving
18 = -9 + -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 = -9 + -3y + 3y

Combine like terms: -3y + 3y = 0
18 + 3y = -9 + 0
18 + 3y = -9

Add '-18' to each side of the equation.
18 + -18 + 3y = -9 + -18

Combine like terms: 18 + -18 = 0
0 + 3y = -9 + -18
3y = -9 + -18

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

Divide each side by '3'.
y = -9

Simplifying
y = -9

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