8y+9=15-4y

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


Simplifying
8y + 9 = 15 + -4y

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

Solving
9 + 8y = 15 + -4y

Solving for variable 'y'.

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

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

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

Combine like terms: -4y + 4y = 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 = 6
12y = 6

Divide each side by '12'.
y = 0.5

Simplifying
y = 0.5

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