A fraction is a ratio
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Because a fraction is represented by the ratio of the two numbers and multiplying both by the same number does not change their ratio.
A fraction is a ratio... even when you don't change its form. 1/2 is "one half/ one over two/ one to two ratio"
You simply substitute the divide symol (the forward slash or horizontal line) by the colon. Thus, the improper fraction, 13/5 = 13:5 as a ratio.
Certainly. Every fraction is a ratio.
You should when doing calculations with it but otherwise, No.