Subtract 63/40 from 90/5
1st number: 18 0/5, 2nd number: 1 23/40
90/5 - 63/40 is 657/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
90/5 = 90 × 8/5 × 8 = 720/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
63/40 = 63 × 1/40 × 1 = 63/40 - Subtract the two like fractions:
720/40 - 63/40 = 720 - 63/40 = 657/40 - In mixed form: 1617/40
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