7x-(x*x-x-9)=17-x*x

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Solution for 7x-(x*x-x-9)=17-x*x equation:


Simplifying
7x + -1(x * x + -1x + -9) = 17 + -1x * x

Multiply x * x
7x + -1(x2 + -1x + -9) = 17 + -1x * x

Reorder the terms:
7x + -1(-9 + -1x + x2) = 17 + -1x * x
7x + (-9 * -1 + -1x * -1 + x2 * -1) = 17 + -1x * x
7x + (9 + 1x + -1x2) = 17 + -1x * x

Reorder the terms:
9 + 7x + 1x + -1x2 = 17 + -1x * x

Combine like terms: 7x + 1x = 8x
9 + 8x + -1x2 = 17 + -1x * x

Multiply x * x
9 + 8x + -1x2 = 17 + -1x2

Add 'x2' to each side of the equation.
9 + 8x + -1x2 + x2 = 17 + -1x2 + x2

Combine like terms: -1x2 + x2 = 0
9 + 8x + 0 = 17 + -1x2 + x2
9 + 8x = 17 + -1x2 + x2

Combine like terms: -1x2 + x2 = 0
9 + 8x = 17 + 0
9 + 8x = 17

Solving
9 + 8x = 17

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 8x = 17 + -9

Combine like terms: 9 + -9 = 0
0 + 8x = 17 + -9
8x = 17 + -9

Combine like terms: 17 + -9 = 8
8x = 8

Divide each side by '8'.
x = 1

Simplifying
x = 1

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