y=(5x^2-3x+9)-(20x^2+11x-6)

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Solution for y=(5x^2-3x+9)-(20x^2+11x-6) equation: 


Simplifying
y = (5x2 + -3x + 9) + -1(20x2 + 11x + -6)

Reorder the terms:
y = (9 + -3x + 5x2) + -1(20x2 + 11x + -6)

Remove parenthesis around (9 + -3x + 5x2)
y = 9 + -3x + 5x2 + -1(20x2 + 11x + -6)

Reorder the terms:
y = 9 + -3x + 5x2 + -1(-6 + 11x + 20x2)
y = 9 + -3x + 5x2 + (-6 * -1 + 11x * -1 + 20x2 * -1)
y = 9 + -3x + 5x2 + (6 + -11x + -20x2)

Reorder the terms:
y = 9 + 6 + -3x + -11x + 5x2 + -20x2

Combine like terms: 9 + 6 = 15
y = 15 + -3x + -11x + 5x2 + -20x2

Combine like terms: -3x + -11x = -14x
y = 15 + -14x + 5x2 + -20x2

Combine like terms: 5x2 + -20x2 = -15x2
y = 15 + -14x + -15x2

Solving
y = 15 + -14x + -15x2

Solving for variable 'y'.

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

Simplifying
y = 15 + -14x + -15x2

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