(5x^2+4x-7)+(3x^2+5x+13)-(8x^2-11)=

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Solution for (5x^2+4x-7)+(3x^2+5x+13)-(8x^2-11)= equation:


Simplifying
(5x2 + 4x + -7) + (3x2 + 5x + 13) + -1(8x2 + -11) = 0

Reorder the terms:
(-7 + 4x + 5x2) + (3x2 + 5x + 13) + -1(8x2 + -11) = 0

Remove parenthesis around (-7 + 4x + 5x2)
-7 + 4x + 5x2 + (3x2 + 5x + 13) + -1(8x2 + -11) = 0

Reorder the terms:
-7 + 4x + 5x2 + (13 + 5x + 3x2) + -1(8x2 + -11) = 0

Remove parenthesis around (13 + 5x + 3x2)
-7 + 4x + 5x2 + 13 + 5x + 3x2 + -1(8x2 + -11) = 0

Reorder the terms:
-7 + 4x + 5x2 + 13 + 5x + 3x2 + -1(-11 + 8x2) = 0
-7 + 4x + 5x2 + 13 + 5x + 3x2 + (-11 * -1 + 8x2 * -1) = 0
-7 + 4x + 5x2 + 13 + 5x + 3x2 + (11 + -8x2) = 0

Reorder the terms:
-7 + 13 + 11 + 4x + 5x + 5x2 + 3x2 + -8x2 = 0

Combine like terms: -7 + 13 = 6
6 + 11 + 4x + 5x + 5x2 + 3x2 + -8x2 = 0

Combine like terms: 6 + 11 = 17
17 + 4x + 5x + 5x2 + 3x2 + -8x2 = 0

Combine like terms: 4x + 5x = 9x
17 + 9x + 5x2 + 3x2 + -8x2 = 0

Combine like terms: 5x2 + 3x2 = 8x2
17 + 9x + 8x2 + -8x2 = 0

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

Solving
17 + 9x = 0

Solving for variable 'x'.

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

Add '-17' to each side of the equation.
17 + -17 + 9x = 0 + -17

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

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

Divide each side by '9'.
x = -1.888888889

Simplifying
x = -1.888888889

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