2x+81-2*9*x+x^2-1=144-2*12*x+x^2-2x-4

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Solution for 2x+81-2*9*x+x^2-1=144-2*12*x+x^2-2x-4 equation: 


Simplifying
2x + 81 + -2 * 9x + x2 + -1 = 144 + -2 * 12x + x2 + -2x + -4

Multiply -2 * 9
2x + 81 + -18x + x2 + -1 = 144 + -2 * 12x + x2 + -2x + -4

Reorder the terms:
81 + -1 + 2x + -18x + x2 = 144 + -2 * 12x + x2 + -2x + -4

Combine like terms: 81 + -1 = 80
80 + 2x + -18x + x2 = 144 + -2 * 12x + x2 + -2x + -4

Combine like terms: 2x + -18x = -16x
80 + -16x + x2 = 144 + -2 * 12x + x2 + -2x + -4

Multiply -2 * 12
80 + -16x + x2 = 144 + -24x + x2 + -2x + -4

Reorder the terms:
80 + -16x + x2 = 144 + -4 + -24x + -2x + x2

Combine like terms: 144 + -4 = 140
80 + -16x + x2 = 140 + -24x + -2x + x2

Combine like terms: -24x + -2x = -26x
80 + -16x + x2 = 140 + -26x + x2

Add '-1x2' to each side of the equation.
80 + -16x + x2 + -1x2 = 140 + -26x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
80 + -16x + 0 = 140 + -26x + x2 + -1x2
80 + -16x = 140 + -26x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
80 + -16x = 140 + -26x + 0
80 + -16x = 140 + -26x

Solving
80 + -16x = 140 + -26x

Solving for variable 'x'.

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

Add '26x' to each side of the equation.
80 + -16x + 26x = 140 + -26x + 26x

Combine like terms: -16x + 26x = 10x
80 + 10x = 140 + -26x + 26x

Combine like terms: -26x + 26x = 0
80 + 10x = 140 + 0
80 + 10x = 140

Add '-80' to each side of the equation.
80 + -80 + 10x = 140 + -80

Combine like terms: 80 + -80 = 0
0 + 10x = 140 + -80
10x = 140 + -80

Combine like terms: 140 + -80 = 60
10x = 60

Divide each side by '10'.
x = 6

Simplifying
x = 6

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