9-3y=18

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Solution for 9-3y=18 equation: 


Simplifying
9 + -3y = 18

Solving
9 + -3y = 18

Solving for variable 'y'.

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

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

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

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

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

Simplifying
y = -3

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