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You have not written that equation correctly. 5 x 2 is 10, and 10 - 9 is one, not zero. Possibly you intended to write something such as 5x + 2 - 9 = 0, in which case you would have an equation that could be solved.

5x + 2 - 9 = 0

5x - 7 = 0

5x = 7

x = 7/5 = 1.4

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13y ago

What else can I help you with?