Subtract 63/45 from 21/16
1st number: 1 5/16, 2nd number: 1 18/45
21/16 - 63/45 is -7/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 16 × 45 = 720,
21/16 = 21 × 45/16 × 45 = 945/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
63/45 = 63 × 16/45 × 16 = 1008/720 - Subtract the two like fractions:
945/720 - 1008/720 = 945 - 1008/720 = -63/720 - After reducing the fraction, the answer is -7/80
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