(x+3)(x-1)=(x+4)(x-3)

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Solution for (x+3)(x-1)=(x+4)(x-3) equation:


Simplifying
(x + 3)(x + -1) = (x + 4)(x + -3)

Reorder the terms:
(3 + x)(x + -1) = (x + 4)(x + -3)

Reorder the terms:
(3 + x)(-1 + x) = (x + 4)(x + -3)

Multiply (3 + x) * (-1 + x)
(3(-1 + x) + x(-1 + x)) = (x + 4)(x + -3)
((-1 * 3 + x * 3) + x(-1 + x)) = (x + 4)(x + -3)
((-3 + 3x) + x(-1 + x)) = (x + 4)(x + -3)
(-3 + 3x + (-1 * x + x * x)) = (x + 4)(x + -3)
(-3 + 3x + (-1x + x2)) = (x + 4)(x + -3)

Combine like terms: 3x + -1x = 2x
(-3 + 2x + x2) = (x + 4)(x + -3)

Reorder the terms:
-3 + 2x + x2 = (4 + x)(x + -3)

Reorder the terms:
-3 + 2x + x2 = (4 + x)(-3 + x)

Multiply (4 + x) * (-3 + x)
-3 + 2x + x2 = (4(-3 + x) + x(-3 + x))
-3 + 2x + x2 = ((-3 * 4 + x * 4) + x(-3 + x))
-3 + 2x + x2 = ((-12 + 4x) + x(-3 + x))
-3 + 2x + x2 = (-12 + 4x + (-3 * x + x * x))
-3 + 2x + x2 = (-12 + 4x + (-3x + x2))

Combine like terms: 4x + -3x = 1x
-3 + 2x + x2 = (-12 + 1x + x2)

Add '-1x2' to each side of the equation.
-3 + 2x + x2 + -1x2 = -12 + 1x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-3 + 2x + 0 = -12 + 1x + x2 + -1x2
-3 + 2x = -12 + 1x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-3 + 2x = -12 + 1x + 0
-3 + 2x = -12 + 1x

Solving
-3 + 2x = -12 + 1x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-3 + 2x + -1x = -12 + 1x + -1x

Combine like terms: 2x + -1x = 1x
-3 + 1x = -12 + 1x + -1x

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

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

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

Combine like terms: -12 + 3 = -9
1x = -9

Divide each side by '1'.
x = -9

Simplifying
x = -9

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