(4x+3)(x+3)=(x+3)(3x+7)

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


Simplifying
(4x + 3)(x + 3) = (x + 3)(3x + 7)

Reorder the terms:
(3 + 4x)(x + 3) = (x + 3)(3x + 7)

Reorder the terms:
(3 + 4x)(3 + x) = (x + 3)(3x + 7)

Multiply (3 + 4x) * (3 + x)
(3(3 + x) + 4x * (3 + x)) = (x + 3)(3x + 7)
((3 * 3 + x * 3) + 4x * (3 + x)) = (x + 3)(3x + 7)
((9 + 3x) + 4x * (3 + x)) = (x + 3)(3x + 7)
(9 + 3x + (3 * 4x + x * 4x)) = (x + 3)(3x + 7)
(9 + 3x + (12x + 4x2)) = (x + 3)(3x + 7)

Combine like terms: 3x + 12x = 15x
(9 + 15x + 4x2) = (x + 3)(3x + 7)

Reorder the terms:
9 + 15x + 4x2 = (3 + x)(3x + 7)

Reorder the terms:
9 + 15x + 4x2 = (3 + x)(7 + 3x)

Multiply (3 + x) * (7 + 3x)
9 + 15x + 4x2 = (3(7 + 3x) + x(7 + 3x))
9 + 15x + 4x2 = ((7 * 3 + 3x * 3) + x(7 + 3x))
9 + 15x + 4x2 = ((21 + 9x) + x(7 + 3x))
9 + 15x + 4x2 = (21 + 9x + (7 * x + 3x * x))
9 + 15x + 4x2 = (21 + 9x + (7x + 3x2))

Combine like terms: 9x + 7x = 16x
9 + 15x + 4x2 = (21 + 16x + 3x2)

Solving
9 + 15x + 4x2 = 21 + 16x + 3x2

Solving for variable 'x'.

Reorder the terms:
9 + -21 + 15x + -16x + 4x2 + -3x2 = 21 + 16x + 3x2 + -21 + -16x + -3x2

Combine like terms: 9 + -21 = -12
-12 + 15x + -16x + 4x2 + -3x2 = 21 + 16x + 3x2 + -21 + -16x + -3x2

Combine like terms: 15x + -16x = -1x
-12 + -1x + 4x2 + -3x2 = 21 + 16x + 3x2 + -21 + -16x + -3x2

Combine like terms: 4x2 + -3x2 = 1x2
-12 + -1x + 1x2 = 21 + 16x + 3x2 + -21 + -16x + -3x2

Reorder the terms:
-12 + -1x + 1x2 = 21 + -21 + 16x + -16x + 3x2 + -3x2

Combine like terms: 21 + -21 = 0
-12 + -1x + 1x2 = 0 + 16x + -16x + 3x2 + -3x2
-12 + -1x + 1x2 = 16x + -16x + 3x2 + -3x2

Combine like terms: 16x + -16x = 0
-12 + -1x + 1x2 = 0 + 3x2 + -3x2
-12 + -1x + 1x2 = 3x2 + -3x2

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

Factor a trinomial.
(-3 + -1x)(4 + -1x) = 0

Subproblem 1

Set the factor '(-3 + -1x)' equal to zero and attempt to solve: Simplifying -3 + -1x = 0 Solving -3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1x = 0 + 3 -1x = 0 + 3 Combine like terms: 0 + 3 = 3 -1x = 3 Divide each side by '-1'. x = -3 Simplifying x = -3

Subproblem 2

Set the factor '(4 + -1x)' equal to zero and attempt to solve: Simplifying 4 + -1x = 0 Solving 4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x = 0 + -4 -1x = 0 + -4 Combine like terms: 0 + -4 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4

Solution

x = {-3, 4}

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