Subtract 15/75 from 21/8, Solve 2 5/8

Subtract 15/75 from 21/8

1^st number: 2 5/8, 2^nd number: 15/75

21/8 - 15/75 is 97/40.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 75 is 600

Next, find the equivalent fraction of both fractional numbers with denominator 600
For the 1st fraction, since 8 × 75 = 600,
21/8 = 21 × 75/8 × 75 = 1575/600
Likewise, for the 2nd fraction, since 75 × 8 = 600,
15/75 = 15 × 8/75 × 8 = 120/600
Subtract the two like fractions:
1575/600 - 120/600 = 1575 - 120/600 = 1455/600
After reducing the fraction, the answer is 97/40
In mixed form: 217/40

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