Subtract 63/54 from 21/7
1st number: 3 0/7, 2nd number: 1 9/54
21/7 - 63/54 is 11/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 7 × 54 = 378,
21/7 = 21 × 54/7 × 54 = 1134/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
63/54 = 63 × 7/54 × 7 = 441/378 - Subtract the two like fractions:
1134/378 - 441/378 = 1134 - 441/378 = 693/378 - After reducing the fraction, the answer is 11/6
- In mixed form: 15/6
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