21z^2-7z=0

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Solution for 21z^2-7z=0 equation:


Simplifying
21z2 + -7z = 0

Reorder the terms:
-7z + 21z2 = 0

Solving
-7z + 21z2 = 0

Solving for variable 'z'.

Factor out the Greatest Common Factor (GCF), '7z'.
7z(-1 + 3z) = 0

Ignore the factor 7.

Subproblem 1

Set the factor 'z' equal to zero and attempt to solve: Simplifying z = 0 Solving z = 0 Move all terms containing z to the left, all other terms to the right. Simplifying z = 0

Subproblem 2

Set the factor '(-1 + 3z)' equal to zero and attempt to solve: Simplifying -1 + 3z = 0 Solving -1 + 3z = 0 Move all terms containing z to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + 3z = 0 + 1 Combine like terms: -1 + 1 = 0 0 + 3z = 0 + 1 3z = 0 + 1 Combine like terms: 0 + 1 = 1 3z = 1 Divide each side by '3'. z = 0.3333333333 Simplifying z = 0.3333333333

Solution

z = {0, 0.3333333333}

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