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Simplifying
9x * -15x = 0
Reorder the terms for easier multiplication:
9 * -15x * x = 0
Multiply 9 * -15
-135x * x = 0
Multiply x * x
-135x2 = 0
Solving
-135x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '-135'.
x2 = 0
Simplifying
x2 = 0
Take the square root of each side:
x = {0}
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