Subtract 21/54 from 84/30
1st number: 2 24/30, 2nd number: 21/54
84/30 - 21/54 is 217/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
84/30 = 84 × 9/30 × 9 = 756/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
21/54 = 21 × 5/54 × 5 = 105/270 - Subtract the two like fractions:
756/270 - 105/270 = 756 - 105/270 = 651/270 - After reducing the fraction, the answer is 217/90
- In mixed form: 237/90
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