(45x+75)=(3x+5)(15x+15)

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Solution for (45x+75)=(3x+5)(15x+15) equation:


Simplifying
(45x + 75) = (3x + 5)(15x + 15)

Reorder the terms:
(75 + 45x) = (3x + 5)(15x + 15)

Remove parenthesis around (75 + 45x)
75 + 45x = (3x + 5)(15x + 15)

Reorder the terms:
75 + 45x = (5 + 3x)(15x + 15)

Reorder the terms:
75 + 45x = (5 + 3x)(15 + 15x)

Multiply (5 + 3x) * (15 + 15x)
75 + 45x = (5(15 + 15x) + 3x * (15 + 15x))
75 + 45x = ((15 * 5 + 15x * 5) + 3x * (15 + 15x))
75 + 45x = ((75 + 75x) + 3x * (15 + 15x))
75 + 45x = (75 + 75x + (15 * 3x + 15x * 3x))
75 + 45x = (75 + 75x + (45x + 45x2))

Combine like terms: 75x + 45x = 120x
75 + 45x = (75 + 120x + 45x2)

Add '-75' to each side of the equation.
75 + -75 + 45x = 75 + 120x + -75 + 45x2

Combine like terms: 75 + -75 = 0
0 + 45x = 75 + 120x + -75 + 45x2
45x = 75 + 120x + -75 + 45x2

Reorder the terms:
45x = 75 + -75 + 120x + 45x2

Combine like terms: 75 + -75 = 0
45x = 0 + 120x + 45x2
45x = 120x + 45x2

Solving
45x = 120x + 45x2

Solving for variable 'x'.

Combine like terms: 45x + -120x = -75x
-75x + -45x2 = 120x + 45x2 + -120x + -45x2

Reorder the terms:
-75x + -45x2 = 120x + -120x + 45x2 + -45x2

Combine like terms: 120x + -120x = 0
-75x + -45x2 = 0 + 45x2 + -45x2
-75x + -45x2 = 45x2 + -45x2

Combine like terms: 45x2 + -45x2 = 0
-75x + -45x2 = 0

Factor out the Greatest Common Factor (GCF), '-15x'.
-15x(5 + 3x) = 0

Ignore the factor -15.

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

Set the factor '(5 + 3x)' equal to zero and attempt to solve: Simplifying 5 + 3x = 0 Solving 5 + 3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + 3x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 3x = 0 + -5 3x = 0 + -5 Combine like terms: 0 + -5 = -5 3x = -5 Divide each side by '3'. x = -1.666666667 Simplifying x = -1.666666667

Solution

x = {0, -1.666666667}

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