Subtract 30/64 from 21/8
1st number: 2 5/8, 2nd number: 30/64
21/8 - 30/64 is 69/32.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 64 is 64
Next, find the equivalent fraction of both fractional numbers with denominator 64 - For the 1st fraction, since 8 × 8 = 64,
21/8 = 21 × 8/8 × 8 = 168/64 - Likewise, for the 2nd fraction, since 64 × 1 = 64,
30/64 = 30 × 1/64 × 1 = 30/64 - Subtract the two like fractions:
168/64 - 30/64 = 168 - 30/64 = 138/64 - After reducing the fraction, the answer is 69/32
- In mixed form: 25/32
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