8y-9=12y+15

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Solution for 8y-9=12y+15 equation:


Simplifying
8y + -9 = 12y + 15

Reorder the terms:
-9 + 8y = 12y + 15

Reorder the terms:
-9 + 8y = 15 + 12y

Solving
-9 + 8y = 15 + 12y

Solving for variable 'y'.

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

Add '-12y' to each side of the equation.
-9 + 8y + -12y = 15 + 12y + -12y

Combine like terms: 8y + -12y = -4y
-9 + -4y = 15 + 12y + -12y

Combine like terms: 12y + -12y = 0
-9 + -4y = 15 + 0
-9 + -4y = 15

Add '9' to each side of the equation.
-9 + 9 + -4y = 15 + 9

Combine like terms: -9 + 9 = 0
0 + -4y = 15 + 9
-4y = 15 + 9

Combine like terms: 15 + 9 = 24
-4y = 24

Divide each side by '-4'.
y = -6

Simplifying
y = -6

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