(20-x)(23-x)=340

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Solution for (20-x)(23-x)=340 equation:


Simplifying
(20 + -1x)(23 + -1x) = 340

Multiply (20 + -1x) * (23 + -1x)
(20(23 + -1x) + -1x * (23 + -1x)) = 340
((23 * 20 + -1x * 20) + -1x * (23 + -1x)) = 340
((460 + -20x) + -1x * (23 + -1x)) = 340
(460 + -20x + (23 * -1x + -1x * -1x)) = 340
(460 + -20x + (-23x + 1x2)) = 340

Combine like terms: -20x + -23x = -43x
(460 + -43x + 1x2) = 340

Solving
460 + -43x + 1x2 = 340

Solving for variable 'x'.

Reorder the terms:
460 + -340 + -43x + 1x2 = 340 + -340

Combine like terms: 460 + -340 = 120
120 + -43x + 1x2 = 340 + -340

Combine like terms: 340 + -340 = 0
120 + -43x + 1x2 = 0

Factor a trinomial.
(3 + -1x)(40 + -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 '(40 + -1x)' equal to zero and attempt to solve: Simplifying 40 + -1x = 0 Solving 40 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-40' to each side of the equation. 40 + -40 + -1x = 0 + -40 Combine like terms: 40 + -40 = 0 0 + -1x = 0 + -40 -1x = 0 + -40 Combine like terms: 0 + -40 = -40 -1x = -40 Divide each side by '-1'. x = 40 Simplifying x = 40

Solution

x = {3, 40}

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