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Simplifying
5j * 4j = 0
Reorder the terms for easier multiplication:
5 * 4j * j = 0
Multiply 5 * 4
20j * j = 0
Multiply j * j
20j2 = 0
Solving
20j2 = 0
Solving for variable 'j'.
Move all terms containing j to the left, all other terms to the right.
Divide each side by '20'.
j2 = 0.0
Simplifying
j2 = 0.0
Take the square root of each side:
j = {0.0}
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