Subtract 21/16 from 45/4
1st number: 11 1/4, 2nd number: 1 5/16
45/4 - 21/16 is 159/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 16 is 16
Next, find the equivalent fraction of both fractional numbers with denominator 16 - For the 1st fraction, since 4 × 4 = 16,
45/4 = 45 × 4/4 × 4 = 180/16 - Likewise, for the 2nd fraction, since 16 × 1 = 16,
21/16 = 21 × 1/16 × 1 = 21/16 - Subtract the two like fractions:
180/16 - 21/16 = 180 - 21/16 = 159/16 - In mixed form: 915/16
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