Does #54/8# have an equivalent fraction with a denominator or #9#? If so, what is it?

2 Answers
May 3, 2016

No. This fraction cannot be changed to an equivalent one with denominator of #9#.

Explanation:

The original denominator is #8=2^3#, it is impossible to change the denominator to #9=3^2#. The only oerations allowed are multiplying or dividing by the same number, but you would have to reduce the fraction by #8# (there are no #2's# in prime factorization of #9#), but the numerator is not a multiple of #8#.

May 4, 2016

It does not have an equivalent version (with a denominator of 9) and an integer numerator.

Explanation:

Occasionally you may find a teacher looking for (or accepting) fractions with numerators (or denominators) which are themselves fractions.

In this case, we would have the required ratios:
#color(white)("XXX")54/8=x/9#

#color(white)("XXX")rArr 8x=54xx9=486#

#color(white)("XXX")rArr x=486/8=243/4 #

and #54/8 = (243/4)/9 = 60.75/9#