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