-x(4+x)+3=x(7-x)+5(x-9)

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Solution for -x(4+x)+3=x(7-x)+5(x-9) equation:


Simplifying
-1x(4 + x) + 3 = x(7 + -1x) + 5(x + -9)
(4 * -1x + x * -1x) + 3 = x(7 + -1x) + 5(x + -9)
(-4x + -1x2) + 3 = x(7 + -1x) + 5(x + -9)

Reorder the terms:
3 + -4x + -1x2 = x(7 + -1x) + 5(x + -9)
3 + -4x + -1x2 = (7 * x + -1x * x) + 5(x + -9)
3 + -4x + -1x2 = (7x + -1x2) + 5(x + -9)

Reorder the terms:
3 + -4x + -1x2 = 7x + -1x2 + 5(-9 + x)
3 + -4x + -1x2 = 7x + -1x2 + (-9 * 5 + x * 5)
3 + -4x + -1x2 = 7x + -1x2 + (-45 + 5x)

Reorder the terms:
3 + -4x + -1x2 = -45 + 7x + 5x + -1x2

Combine like terms: 7x + 5x = 12x
3 + -4x + -1x2 = -45 + 12x + -1x2

Add 'x2' to each side of the equation.
3 + -4x + -1x2 + x2 = -45 + 12x + -1x2 + x2

Combine like terms: -1x2 + x2 = 0
3 + -4x + 0 = -45 + 12x + -1x2 + x2
3 + -4x = -45 + 12x + -1x2 + x2

Combine like terms: -1x2 + x2 = 0
3 + -4x = -45 + 12x + 0
3 + -4x = -45 + 12x

Solving
3 + -4x = -45 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
3 + -4x + -12x = -45 + 12x + -12x

Combine like terms: -4x + -12x = -16x
3 + -16x = -45 + 12x + -12x

Combine like terms: 12x + -12x = 0
3 + -16x = -45 + 0
3 + -16x = -45

Add '-3' to each side of the equation.
3 + -3 + -16x = -45 + -3

Combine like terms: 3 + -3 = 0
0 + -16x = -45 + -3
-16x = -45 + -3

Combine like terms: -45 + -3 = -48
-16x = -48

Divide each side by '-16'.
x = 3

Simplifying
x = 3

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