3y-9=18y+81

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Solution for 3y-9=18y+81 equation:


Simplifying
3y + -9 = 18y + 81

Reorder the terms:
-9 + 3y = 18y + 81

Reorder the terms:
-9 + 3y = 81 + 18y

Solving
-9 + 3y = 81 + 18y

Solving for variable 'y'.

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

Add '-18y' to each side of the equation.
-9 + 3y + -18y = 81 + 18y + -18y

Combine like terms: 3y + -18y = -15y
-9 + -15y = 81 + 18y + -18y

Combine like terms: 18y + -18y = 0
-9 + -15y = 81 + 0
-9 + -15y = 81

Add '9' to each side of the equation.
-9 + 9 + -15y = 81 + 9

Combine like terms: -9 + 9 = 0
0 + -15y = 81 + 9
-15y = 81 + 9

Combine like terms: 81 + 9 = 90
-15y = 90

Divide each side by '-15'.
y = -6

Simplifying
y = -6

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