Subtract 18/28 from 54/30
1st number: 1 24/30, 2nd number: 18/28
54/30 - 18/28 is 81/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
54/30 = 54 × 14/30 × 14 = 756/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
18/28 = 18 × 15/28 × 15 = 270/420 - Subtract the two like fractions:
756/420 - 270/420 = 756 - 270/420 = 486/420 - After reducing the fraction, the answer is 81/70
- In mixed form: 111/70
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