4y-9=y-9

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Solution for 4y-9=y-9 equation:


Simplifying
4y + -9 = y + -9

Reorder the terms:
-9 + 4y = y + -9

Reorder the terms:
-9 + 4y = -9 + y

Add '9' to each side of the equation.
-9 + 9 + 4y = -9 + 9 + y

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

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

Solving
4y = 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.
4y + -1y = y + -1y

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

Combine like terms: y + -1y = 0
3y = 0

Divide each side by '3'.
y = 0

Simplifying
y = 0

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