-4y-9=8y+15

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Solution for -4y-9=8y+15 equation:


Simplifying
-4y + -9 = 8y + 15

Reorder the terms:
-9 + -4y = 8y + 15

Reorder the terms:
-9 + -4y = 15 + 8y

Solving
-9 + -4y = 15 + 8y

Solving for variable 'y'.

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

Add '-8y' to each side of the equation.
-9 + -4y + -8y = 15 + 8y + -8y

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

Combine like terms: 8y + -8y = 0
-9 + -12y = 15 + 0
-9 + -12y = 15

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

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

Combine like terms: 15 + 9 = 24
-12y = 24

Divide each side by '-12'.
y = -2

Simplifying
y = -2

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