I think that the answer becomes 1 because lets say that your number was 24. The reciprocal of 24 = 1/24 and it you multiply 24/1 by 1/24 you get 24/24 = 1
(The reciprocal is a fraction flipped over i.e. bottom number becomes top and top number becomes bottom and with multiplying fractions, you just multiply all the tops and multiply all the bottoms.)
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multiply by the reciprocal of the whole number
A reciprocal is the number you must multiply another number by to get the product of 1. The reciprocal of 4 (which is the same as 4/1) is 1/4. The reciprocal of 3/8 is 8/3. The reciprocal of 13 is 1/13.This can also be expressed using exponents. The reciprocal of any value x is equal to x-1. So the reciprocal of a/b is (a/b)-1, which is equal to b/a.To find a reciprocal, put the number under one. If it is a fraction, flip the fraction. Whatever the reciprocal is, remember that it must always multiply to one with the original number.
Any number multiplied by zero = 0
The reciprocal of any number is 1 divided by that number. The reciprocal of 5n is therefore 1/5n.
the reciprocal (aka multiplicative inverse) of a number is 1/number, so the reciprocal of -13 is -1/13 (I moved the negative from the 13 to the 1 as per convention, 1/-13 = -1/13). The reciprocal of any number is what you have to multiply that number by to yield 1. -13 * -1/13 = (-13*-1)/13 = 13/13 = 1