Subtract 12/20 from 27/10, Solve 2 7/10

Subtract 12/20 from 27/10

1^st number: 2 7/10, 2^nd number: 12/20

27/10 - 12/20 is 21/10.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 20 is 20

Next, find the equivalent fraction of both fractional numbers with denominator 20
For the 1st fraction, since 10 × 2 = 20,
27/10 = 27 × 2/10 × 2 = 54/20
Likewise, for the 2nd fraction, since 20 × 1 = 20,
12/20 = 12 × 1/20 × 1 = 12/20
Subtract the two like fractions:
54/20 - 12/20 = 54 - 12/20 = 42/20
After reducing the fraction, the answer is 21/10
In mixed form: 21/10

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