Subtract 27/60 from 42/2, Solve 21 0/2

Subtract 27/60 from 42/2

1^st number: 21 0/2, 2^nd number: 27/60

42/2 - 27/60 is 411/20.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 60 is 60

Next, find the equivalent fraction of both fractional numbers with denominator 60
For the 1st fraction, since 2 × 30 = 60,
42/2 = 42 × 30/2 × 30 = 1260/60
Likewise, for the 2nd fraction, since 60 × 1 = 60,
27/60 = 27 × 1/60 × 1 = 27/60
Subtract the two like fractions:
1260/60 - 27/60 = 1260 - 27/60 = 1233/60
After reducing the fraction, the answer is 411/20
In mixed form: 2011/20

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