3y-9=6y+18

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Solution for 3y-9=6y+18 equation:


Simplifying
3y + -9 = 6y + 18

Reorder the terms:
-9 + 3y = 6y + 18

Reorder the terms:
-9 + 3y = 18 + 6y

Solving
-9 + 3y = 18 + 6y

Solving for variable 'y'.

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

Add '-6y' to each side of the equation.
-9 + 3y + -6y = 18 + 6y + -6y

Combine like terms: 3y + -6y = -3y
-9 + -3y = 18 + 6y + -6y

Combine like terms: 6y + -6y = 0
-9 + -3y = 18 + 0
-9 + -3y = 18

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 = 27
-3y = 27

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

Simplifying
y = -9

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