21d-7d=0

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Solution for 21d-7d=0 equation: 


Simplifying
21d + -7d = 0

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

Solving
14d = 0

Solving for variable 'd'.

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

Divide each side by '14'.
d = 0

Simplifying
d = 0

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