x^2+10x-15=5x+9

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Solution for x^2+10x-15=5x+9 equation: 


Simplifying
x2 + 10x + -15 = 5x + 9

Reorder the terms:
-15 + 10x + x2 = 5x + 9

Reorder the terms:
-15 + 10x + x2 = 9 + 5x

Solving
-15 + 10x + x2 = 9 + 5x

Solving for variable 'x'.

Reorder the terms:
-15 + -9 + 10x + -5x + x2 = 9 + 5x + -9 + -5x

Combine like terms: -15 + -9 = -24
-24 + 10x + -5x + x2 = 9 + 5x + -9 + -5x

Combine like terms: 10x + -5x = 5x
-24 + 5x + x2 = 9 + 5x + -9 + -5x

Reorder the terms:
-24 + 5x + x2 = 9 + -9 + 5x + -5x

Combine like terms: 9 + -9 = 0
-24 + 5x + x2 = 0 + 5x + -5x
-24 + 5x + x2 = 5x + -5x

Combine like terms: 5x + -5x = 0
-24 + 5x + x2 = 0

Factor a trinomial.
(-8 + -1x)(3 + -1x) = 0


Subproblem 1
Set the factor '(-8 + -1x)' equal to zero and attempt to solve:

Simplifying
-8 + -1x = 0

Solving
-8 + -1x = 0

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

Add '8' to each side of the equation.
-8 + 8 + -1x = 0 + 8

Combine like terms: -8 + 8 = 0
0 + -1x = 0 + 8
-1x = 0 + 8

Combine like terms: 0 + 8 = 8
-1x = 8

Divide each side by '-1'.
x = -8

Simplifying
x = -8

Subproblem 2
Set the factor '(3 + -1x)' equal to zero and attempt to solve:

Simplifying
3 + -1x = 0

Solving
3 + -1x = 0

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

Add '-3' to each side of the equation.
3 + -3 + -1x = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -1x = 0 + -3
-1x = 0 + -3

Combine like terms: 0 + -3 = -3
-1x = -3

Divide each side by '-1'.
x = 3

Simplifying
x = 3
Solution
x = {-8, 3}

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