Subtract 54/63 from 40/15
1st number: 2 10/15, 2nd number: 54/63
40/15 - 54/63 is 38/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 15 × 21 = 315,
40/15 = 40 × 21/15 × 21 = 840/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
54/63 = 54 × 5/63 × 5 = 270/315 - Subtract the two like fractions:
840/315 - 270/315 = 840 - 270/315 = 570/315 - After reducing the fraction, the answer is 38/21
- In mixed form: 117/21
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