Subtract 21/60 from 7/5, Solve 1 2/5

Subtract 21/60 from 7/5

1^st number: 1 2/5, 2^nd number: 21/60

7/5 - 21/60 is 21/20.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 60 is 60

Next, find the equivalent fraction of both fractional numbers with denominator 60
For the 1st fraction, since 5 × 12 = 60,
7/5 = 7 × 12/5 × 12 = 84/60
Likewise, for the 2nd fraction, since 60 × 1 = 60,
21/60 = 21 × 1/60 × 1 = 21/60
Subtract the two like fractions:
84/60 - 21/60 = 84 - 21/60 = 63/60
After reducing the fraction, the answer is 21/20
In mixed form: 11/20

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