Subtract 90/21 from 63/16
1st number: 3 15/16, 2nd number: 4 6/21
63/16 - 90/21 is -39/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 21 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 16 × 21 = 336,
63/16 = 63 × 21/16 × 21 = 1323/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
90/21 = 90 × 16/21 × 16 = 1440/336 - Subtract the two like fractions:
1323/336 - 1440/336 = 1323 - 1440/336 = -117/336 - After reducing the fraction, the answer is -39/112
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