(5x^2+7x+1)-(5x^2-3)=9x-9

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Solution for (5x^2+7x+1)-(5x^2-3)=9x-9 equation:


Simplifying
(5x2 + 7x + 1) + -1(5x2 + -3) = 9x + -9

Reorder the terms:
(1 + 7x + 5x2) + -1(5x2 + -3) = 9x + -9

Remove parenthesis around (1 + 7x + 5x2)
1 + 7x + 5x2 + -1(5x2 + -3) = 9x + -9

Reorder the terms:
1 + 7x + 5x2 + -1(-3 + 5x2) = 9x + -9
1 + 7x + 5x2 + (-3 * -1 + 5x2 * -1) = 9x + -9
1 + 7x + 5x2 + (3 + -5x2) = 9x + -9

Reorder the terms:
1 + 3 + 7x + 5x2 + -5x2 = 9x + -9

Combine like terms: 1 + 3 = 4
4 + 7x + 5x2 + -5x2 = 9x + -9

Combine like terms: 5x2 + -5x2 = 0
4 + 7x + 0 = 9x + -9
4 + 7x = 9x + -9

Reorder the terms:
4 + 7x = -9 + 9x

Solving
4 + 7x = -9 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
4 + 7x + -9x = -9 + 9x + -9x

Combine like terms: 7x + -9x = -2x
4 + -2x = -9 + 9x + -9x

Combine like terms: 9x + -9x = 0
4 + -2x = -9 + 0
4 + -2x = -9

Add '-4' to each side of the equation.
4 + -4 + -2x = -9 + -4

Combine like terms: 4 + -4 = 0
0 + -2x = -9 + -4
-2x = -9 + -4

Combine like terms: -9 + -4 = -13
-2x = -13

Divide each side by '-2'.
x = 6.5

Simplifying
x = 6.5

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