285=-y+15

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Solution for 285=-y+15 equation:


Simplifying
285 = -1y + 15

Reorder the terms:
285 = 15 + -1y

Solving
285 = 15 + -1y

Solving for variable 'y'.

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

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

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

Add '-285' to each side of the equation.
285 + -285 + y = 15 + -285

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

Combine like terms: 15 + -285 = -270
y = -270

Simplifying
y = -270

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