Subtract 90/5 from 63/21
1st number: 3 0/21, 2nd number: 18 0/5
63/21 - 90/5 is -15/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
63/21 = 63 × 5/21 × 5 = 315/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
90/5 = 90 × 21/5 × 21 = 1890/105 - Subtract the two like fractions:
315/105 - 1890/105 = 315 - 1890/105 = -1575/105 - After reducing the fraction, the answer is -15/1
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