21x^2=28x

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Solution for 21x^2=28x equation:


Simplifying
21x2 = 28x

Solving
21x2 = 28x

Solving for variable 'x'.

Reorder the terms:
-28x + 21x2 = 28x + -28x

Combine like terms: 28x + -28x = 0
-28x + 21x2 = 0

Factor out the Greatest Common Factor (GCF), '7x'.
7x(-4 + 3x) = 0

Ignore the factor 7.

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 '(-4 + 3x)' equal to zero and attempt to solve: Simplifying -4 + 3x = 0 Solving -4 + 3x = 0 Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + 3x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + 3x = 0 + 4 3x = 0 + 4 Combine like terms: 0 + 4 = 4 3x = 4 Divide each side by '3'. x = 1.333333333 Simplifying x = 1.333333333

Solution

x = {0, 1.333333333}

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