Subtract 27/20 from 60/84, Solve 60/84

Subtract 27/20 from 60/84

1^st number: 60/84, 2^nd number: 1 7/20

60/84 - 27/20 is -89/140.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 20 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 84 × 5 = 420,
60/84 = 60 × 5/84 × 5 = 300/420
Likewise, for the 2nd fraction, since 20 × 21 = 420,
27/20 = 27 × 21/20 × 21 = 567/420
Subtract the two like fractions:
300/420 - 567/420 = 300 - 567/420 = -267/420
After reducing the fraction, the answer is -89/140

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