(3x-7)(21x+5x)=0

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Solution for (3x-7)(21x+5x)=0 equation:


Simplifying
(3x + -7)(21x + 5x) = 0

Reorder the terms:
(-7 + 3x)(21x + 5x) = 0

Combine like terms: 21x + 5x = 26x
(-7 + 3x)(26x) = 0

Remove parenthesis around (26x)
(-7 + 3x) * 26x = 0

Reorder the terms for easier multiplication:
26x(-7 + 3x) = 0
(-7 * 26x + 3x * 26x) = 0
(-182x + 78x2) = 0

Solving
-182x + 78x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '26x'.
26x(-7 + 3x) = 0

Ignore the factor 26.

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 '(-7 + 3x)' equal to zero and attempt to solve: Simplifying -7 + 3x = 0 Solving -7 + 3x = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + 3x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + 3x = 0 + 7 3x = 0 + 7 Combine like terms: 0 + 7 = 7 3x = 7 Divide each side by '3'. x = 2.333333333 Simplifying x = 2.333333333

Solution

x = {0, 2.333333333}

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