Subtract 54/30 from 15/21
1st number: 15/21, 2nd number: 1 24/30
15/21 - 54/30 is -38/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
15/21 = 15 × 10/21 × 10 = 150/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
54/30 = 54 × 7/30 × 7 = 378/210 - Subtract the two like fractions:
150/210 - 378/210 = 150 - 378/210 = -228/210 - After reducing the fraction, the answer is -38/35
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