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2014年12月5日 · To find out what, when multiplied by 7, equals 1, you can use simple algebra. Let's call the unknown number x. The equation would be: 7x = 1. To solve for x, you need to isolate it on one side of the equation. Divide both sides by 7: x = 1/7. So, 1 divided by 7 is the value of x. In decimal form, this is approximately 0.142857. In a fraction ...

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Multiplication by ONE is simple. Any number multiplied by ONE is itself! Because of the Commutative Property 1 x 7 is the same as 7 x 1