-y=3y+9

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Solution for -y=3y+9 equation:


Simplifying
-1y = 3y + 9

Reorder the terms:
-1y = 9 + 3y

Solving
-1y = 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.
-1y + -3y = 9 + 3y + -3y

Combine like terms: -1y + -3y = -4y
-4y = 9 + 3y + -3y

Combine like terms: 3y + -3y = 0
-4y = 9 + 0
-4y = 9

Divide each side by '-4'.
y = -2.25

Simplifying
y = -2.25

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