Subtract 42/60 from 21/14, Solve 1 7/14

Subtract 42/60 from 21/14

1^st number: 1 7/14, 2^nd number: 42/60

21/14 - 42/60 is 4/5.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 60 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 14 × 30 = 420,
21/14 = 21 × 30/14 × 30 = 630/420
Likewise, for the 2nd fraction, since 60 × 7 = 420,
42/60 = 42 × 7/60 × 7 = 294/420
Subtract the two like fractions:
630/420 - 294/420 = 630 - 294/420 = 336/420
After reducing the fraction, the answer is 4/5

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