Subtract 20/75 from 27/10, Solve 2 7/10

Subtract 20/75 from 27/10

1^st number: 2 7/10, 2^nd number: 20/75

27/10 - 20/75 is 73/30.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 75 is 150

Next, find the equivalent fraction of both fractional numbers with denominator 150
For the 1st fraction, since 10 × 15 = 150,
27/10 = 27 × 15/10 × 15 = 405/150
Likewise, for the 2nd fraction, since 75 × 2 = 150,
20/75 = 20 × 2/75 × 2 = 40/150
Subtract the two like fractions:
405/150 - 40/150 = 405 - 40/150 = 365/150
After reducing the fraction, the answer is 73/30
In mixed form: 213/30

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