Subtract 21/16 from 45/8
1st number: 5 5/8, 2nd number: 1 5/16
45/8 - 21/16 is 69/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 16 is 16
Next, find the equivalent fraction of both fractional numbers with denominator 16 - For the 1st fraction, since 8 × 2 = 16,
45/8 = 45 × 2/8 × 2 = 90/16 - Likewise, for the 2nd fraction, since 16 × 1 = 16,
21/16 = 21 × 1/16 × 1 = 21/16 - Subtract the two like fractions:
90/16 - 21/16 = 90 - 21/16 = 69/16 - In mixed form: 45/16
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