12y-5=9y-8

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Solution for 12y-5=9y-8 equation:


Simplifying
12y + -5 = 9y + -8

Reorder the terms:
-5 + 12y = 9y + -8

Reorder the terms:
-5 + 12y = -8 + 9y

Solving
-5 + 12y = -8 + 9y

Solving for variable 'y'.

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

Add '-9y' to each side of the equation.
-5 + 12y + -9y = -8 + 9y + -9y

Combine like terms: 12y + -9y = 3y
-5 + 3y = -8 + 9y + -9y

Combine like terms: 9y + -9y = 0
-5 + 3y = -8 + 0
-5 + 3y = -8

Add '5' to each side of the equation.
-5 + 5 + 3y = -8 + 5

Combine like terms: -5 + 5 = 0
0 + 3y = -8 + 5
3y = -8 + 5

Combine like terms: -8 + 5 = -3
3y = -3

Divide each side by '3'.
y = -1

Simplifying
y = -1

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