y=(7x+1)(x-3)

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Solution for y=(7x+1)(x-3) equation: 


Simplifying
y = (7x + 1)(x + -3)

Reorder the terms:
y = (1 + 7x)(x + -3)

Reorder the terms:
y = (1 + 7x)(-3 + x)

Multiply (1 + 7x) * (-3 + x)
y = (1(-3 + x) + 7x * (-3 + x))
y = ((-3 * 1 + x * 1) + 7x * (-3 + x))
y = ((-3 + 1x) + 7x * (-3 + x))
y = (-3 + 1x + (-3 * 7x + x * 7x))
y = (-3 + 1x + (-21x + 7x2))

Combine like terms: 1x + -21x = -20x
y = (-3 + -20x + 7x2)

Solving
y = -3 + -20x + 7x2

Solving for variable 'y'.

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

Simplifying
y = -3 + -20x + 7x2

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