Subtract 9/21 from 54/45
1st number: 1 9/45, 2nd number: 9/21
54/45 - 9/21 is 27/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 21 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
54/45 = 54 × 7/45 × 7 = 378/315 - Likewise, for the 2nd fraction, since 21 × 15 = 315,
9/21 = 9 × 15/21 × 15 = 135/315 - Subtract the two like fractions:
378/315 - 135/315 = 378 - 135/315 = 243/315 - After reducing the fraction, the answer is 27/35
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