x^2-6x-7=x^2-2x-15

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Solution for x^2-6x-7=x^2-2x-15 equation:


Simplifying
x2 + -6x + -7 = x2 + -2x + -15

Reorder the terms:
-7 + -6x + x2 = x2 + -2x + -15

Reorder the terms:
-7 + -6x + x2 = -15 + -2x + x2

Add '-1x2' to each side of the equation.
-7 + -6x + x2 + -1x2 = -15 + -2x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-7 + -6x + 0 = -15 + -2x + x2 + -1x2
-7 + -6x = -15 + -2x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-7 + -6x = -15 + -2x + 0
-7 + -6x = -15 + -2x

Solving
-7 + -6x = -15 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
-7 + -6x + 2x = -15 + -2x + 2x

Combine like terms: -6x + 2x = -4x
-7 + -4x = -15 + -2x + 2x

Combine like terms: -2x + 2x = 0
-7 + -4x = -15 + 0
-7 + -4x = -15

Add '7' to each side of the equation.
-7 + 7 + -4x = -15 + 7

Combine like terms: -7 + 7 = 0
0 + -4x = -15 + 7
-4x = -15 + 7

Combine like terms: -15 + 7 = -8
-4x = -8

Divide each side by '-4'.
x = 2

Simplifying
x = 2

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