21d^2-7d=0

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


Simplifying
21d2 + -7d = 0

Reorder the terms:
-7d + 21d2 = 0

Solving
-7d + 21d2 = 0

Solving for variable 'd'.

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

Ignore the factor 7.

Subproblem 1

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

Subproblem 2

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

Solution

d = {0, 0.3333333333}

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