Subtract 21/7 from 54/10
1st number: 5 4/10, 2nd number: 3 0/7
54/10 - 21/7 is 12/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
54/10 = 54 × 7/10 × 7 = 378/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
21/7 = 21 × 10/7 × 10 = 210/70 - Subtract the two like fractions:
378/70 - 210/70 = 378 - 210/70 = 168/70 - After reducing the fraction, the answer is 12/5
- In mixed form: 22/5
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