Subtract 12/7 from 28/60, Solve 28/60

Subtract 12/7 from 28/60

1^st number: 28/60, 2^nd number: 1 5/7

28/60 - 12/7 is -131/105.

Find the least common denominator or LCM of the two denominators:
LCM of 60 and 7 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 60 × 7 = 420,
28/60 = 28 × 7/60 × 7 = 196/420
Likewise, for the 2nd fraction, since 7 × 60 = 420,
12/7 = 12 × 60/7 × 60 = 720/420
Subtract the two like fractions:
196/420 - 720/420 = 196 - 720/420 = -524/420
After reducing the fraction, the answer is -131/105

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