Subtract 54/45 from 24/21
1st number: 1 3/21, 2nd number: 1 9/45
24/21 - 54/45 is -2/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 21 × 15 = 315,
24/21 = 24 × 15/21 × 15 = 360/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
54/45 = 54 × 7/45 × 7 = 378/315 - Subtract the two like fractions:
360/315 - 378/315 = 360 - 378/315 = -18/315 - After reducing the fraction, the answer is -2/35
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