(9x^2+6x+3)-(9x^2+4)=8x+16

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Solution for (9x^2+6x+3)-(9x^2+4)=8x+16 equation:


Simplifying
(9x2 + 6x + 3) + -1(9x2 + 4) = 8x + 16

Reorder the terms:
(3 + 6x + 9x2) + -1(9x2 + 4) = 8x + 16

Remove parenthesis around (3 + 6x + 9x2)
3 + 6x + 9x2 + -1(9x2 + 4) = 8x + 16

Reorder the terms:
3 + 6x + 9x2 + -1(4 + 9x2) = 8x + 16
3 + 6x + 9x2 + (4 * -1 + 9x2 * -1) = 8x + 16
3 + 6x + 9x2 + (-4 + -9x2) = 8x + 16

Reorder the terms:
3 + -4 + 6x + 9x2 + -9x2 = 8x + 16

Combine like terms: 3 + -4 = -1
-1 + 6x + 9x2 + -9x2 = 8x + 16

Combine like terms: 9x2 + -9x2 = 0
-1 + 6x + 0 = 8x + 16
-1 + 6x = 8x + 16

Reorder the terms:
-1 + 6x = 16 + 8x

Solving
-1 + 6x = 16 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
-1 + 6x + -8x = 16 + 8x + -8x

Combine like terms: 6x + -8x = -2x
-1 + -2x = 16 + 8x + -8x

Combine like terms: 8x + -8x = 0
-1 + -2x = 16 + 0
-1 + -2x = 16

Add '1' to each side of the equation.
-1 + 1 + -2x = 16 + 1

Combine like terms: -1 + 1 = 0
0 + -2x = 16 + 1
-2x = 16 + 1

Combine like terms: 16 + 1 = 17
-2x = 17

Divide each side by '-2'.
x = -8.5

Simplifying
x = -8.5

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