3y-9=y

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Solution for 3y-9=y equation:


Simplifying
3y + -9 = y

Reorder the terms:
-9 + 3y = y

Solving
-9 + 3y = y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
-9 + 3y + -1y = y + -1y

Combine like terms: 3y + -1y = 2y
-9 + 2y = y + -1y

Combine like terms: y + -1y = 0
-9 + 2y = 0

Add '9' to each side of the equation.
-9 + 9 + 2y = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 2y = 0 + 9
2y = 0 + 9

Combine like terms: 0 + 9 = 9
2y = 9

Divide each side by '2'.
y = 4.5

Simplifying
y = 4.5

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