Subtract 27/80 from 60/45, Solve 1 15/45

Subtract 27/80 from 60/45

1^st number: 1 15/45, 2^nd number: 27/80

60/45 - 27/80 is 239/240.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 80 is 720

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 45 × 16 = 720,
60/45 = 60 × 16/45 × 16 = 960/720
Likewise, for the 2nd fraction, since 80 × 9 = 720,
27/80 = 27 × 9/80 × 9 = 243/720
Subtract the two like fractions:
960/720 - 243/720 = 960 - 243/720 = 717/720
After reducing the fraction, the answer is 239/240

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