(9y-15)-(6y-15)=285

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Solution for (9y-15)-(6y-15)=285 equation:


Simplifying
(9y + -15) + -1(6y + -15) = 285

Reorder the terms:
(-15 + 9y) + -1(6y + -15) = 285

Remove parenthesis around (-15 + 9y)
-15 + 9y + -1(6y + -15) = 285

Reorder the terms:
-15 + 9y + -1(-15 + 6y) = 285
-15 + 9y + (-15 * -1 + 6y * -1) = 285
-15 + 9y + (15 + -6y) = 285

Reorder the terms:
-15 + 15 + 9y + -6y = 285

Combine like terms: -15 + 15 = 0
0 + 9y + -6y = 285
9y + -6y = 285

Combine like terms: 9y + -6y = 3y
3y = 285

Solving
3y = 285

Solving for variable 'y'.

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

Divide each side by '3'.
y = 95

Simplifying
y = 95

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