(15-2x)(18-2x)=108

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Solution for (15-2x)(18-2x)=108 equation: 


Simplifying
(15 + -2x)(18 + -2x) = 108

Multiply (15 + -2x) * (18 + -2x)
(15(18 + -2x) + -2x * (18 + -2x)) = 108
((18 * 15 + -2x * 15) + -2x * (18 + -2x)) = 108
((270 + -30x) + -2x * (18 + -2x)) = 108
(270 + -30x + (18 * -2x + -2x * -2x)) = 108
(270 + -30x + (-36x + 4x2)) = 108

Combine like terms: -30x + -36x = -66x
(270 + -66x + 4x2) = 108

Solving
270 + -66x + 4x2 = 108

Solving for variable 'x'.

Reorder the terms:
270 + -108 + -66x + 4x2 = 108 + -108

Combine like terms: 270 + -108 = 162
162 + -66x + 4x2 = 108 + -108

Combine like terms: 108 + -108 = 0
162 + -66x + 4x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(81 + -33x + 2x2) = 0

Factor a trinomial.
2((3 + -1x)(27 + -2x)) = 0

Ignore the factor 2.

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 '(27 + -2x)' equal to zero and attempt to solve:

Simplifying
27 + -2x = 0

Solving
27 + -2x = 0

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

Add '-27' to each side of the equation.
27 + -27 + -2x = 0 + -27

Combine like terms: 27 + -27 = 0
0 + -2x = 0 + -27
-2x = 0 + -27

Combine like terms: 0 + -27 = -27
-2x = -27

Divide each side by '-2'.
x = 13.5

Simplifying
x = 13.5
Solution
x = {3, 13.5}

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