0=x*2-7x-20

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Solution for 0=x*2-7x-20 equation:


Simplifying
0 = x * 2 + -7x + -20

Reorder the terms for easier multiplication:
0 = 2x + -7x + -20

Reorder the terms:
0 = -20 + 2x + -7x

Combine like terms: 2x + -7x = -5x
0 = -20 + -5x

Solving
0 = -20 + -5x

Solving for variable 'x'.

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

Add '5x' to each side of the equation.
0 + 5x = -20 + -5x + 5x
Remove the zero:
5x = -20 + -5x + 5x

Combine like terms: -5x + 5x = 0
5x = -20 + 0
5x = -20

Divide each side by '5'.
x = -4

Simplifying
x = -4

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