13-3=10y-15-9y

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Solution for 13-3=10y-15-9y equation:


Simplifying
13 + -3 = 10y + -15 + -9y

Combine like terms: 13 + -3 = 10
10 = 10y + -15 + -9y

Reorder the terms:
10 = -15 + 10y + -9y

Combine like terms: 10y + -9y = 1y
10 = -15 + 1y

Solving
10 = -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.
10 + -1y = -15 + 1y + -1y

Combine like terms: 1y + -1y = 0
10 + -1y = -15 + 0
10 + -1y = -15

Add '-10' to each side of the equation.
10 + -10 + -1y = -15 + -10

Combine like terms: 10 + -10 = 0
0 + -1y = -15 + -10
-1y = -15 + -10

Combine like terms: -15 + -10 = -25
-1y = -25

Divide each side by '-1'.
y = 25

Simplifying
y = 25

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