8+5=9y+15-8y

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Solution for 8+5=9y+15-8y equation:


Simplifying
8 + 5 = 9y + 15 + -8y

Combine like terms: 8 + 5 = 13
13 = 9y + 15 + -8y

Reorder the terms:
13 = 15 + 9y + -8y

Combine like terms: 9y + -8y = 1y
13 = 15 + 1y

Solving
13 = 15 + 1y

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.
13 + -1y = 15 + 1y + -1y

Combine like terms: 1y + -1y = 0
13 + -1y = 15 + 0
13 + -1y = 15

Add '-13' to each side of the equation.
13 + -13 + -1y = 15 + -13

Combine like terms: 13 + -13 = 0
0 + -1y = 15 + -13
-1y = 15 + -13

Combine like terms: 15 + -13 = 2
-1y = 2

Divide each side by '-1'.
y = -2

Simplifying
y = -2

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