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Simplifying
9d * 6d = 0
Reorder the terms for easier multiplication:
9 * 6d * d = 0
Multiply 9 * 6
54d * d = 0
Multiply d * d
54d2 = 0
Solving
54d2 = 0
Solving for variable 'd'.
Move all terms containing d to the left, all other terms to the right.
Divide each side by '54'.
d2 = 0
Simplifying
d2 = 0
Take the square root of each side:
d = {0}
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