21d^2-7d^2=0

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


Simplifying
21d2 + -7d2 = 0

Combine like terms: 21d2 + -7d2 = 14d2
14d2 = 0

Solving
14d2 = 0

Solving for variable 'd'.

Move all terms containing d to the left, all other terms to the right.

Divide each side by '14'.
d2 = 0

Simplifying
d2 = 0

Take the square root of each side:
d = {0}

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