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Simplifying
7x * 9x = 0
Reorder the terms for easier multiplication:
7 * 9x * x = 0
Multiply 7 * 9
63x * x = 0
Multiply x * x
63x2 = 0
Solving
63x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '63'.
x2 = 0
Simplifying
x2 = 0
Take the square root of each side:
x = {0}
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