(1+x)3x=21x

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Solution for (1+x)3x=21x equation:


Simplifying
(1 + x) * 3x = 21x

Reorder the terms for easier multiplication:
3x(1 + x) = 21x
(1 * 3x + x * 3x) = 21x
(3x + 3x2) = 21x

Solving
3x + 3x2 = 21x

Solving for variable 'x'.

Reorder the terms:
3x + -21x + 3x2 = 21x + -21x

Combine like terms: 3x + -21x = -18x
-18x + 3x2 = 21x + -21x

Combine like terms: 21x + -21x = 0
-18x + 3x2 = 0

Factor out the Greatest Common Factor (GCF), '3x'.
3x(-6 + x) = 0

Ignore the factor 3.

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 '(-6 + x)' equal to zero and attempt to solve: Simplifying -6 + x = 0 Solving -6 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = 0 + 6 Combine like terms: -6 + 6 = 0 0 + x = 0 + 6 x = 0 + 6 Combine like terms: 0 + 6 = 6 x = 6 Simplifying x = 6

Solution

x = {0, 6}

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