Subtract 30/75 from 21/8
1st number: 2 5/8, 2nd number: 30/75
21/8 - 30/75 is 89/40.
Steps for subtracting fractions
- 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,
30/75 = 30 × 8/75 × 8 = 240/600 - Subtract the two like fractions:
1575/600 - 240/600 = 1575 - 240/600 = 1335/600 - After reducing the fraction, the answer is 89/40
- In mixed form: 29/40
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