Subtract 30/60 from 21/7
1st number: 3 0/7, 2nd number: 30/60
21/7 - 30/60 is 5/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 7 × 60 = 420,
21/7 = 21 × 60/7 × 60 = 1260/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
30/60 = 30 × 7/60 × 7 = 210/420 - Subtract the two like fractions:
1260/420 - 210/420 = 1260 - 210/420 = 1050/420 - After reducing the fraction, the answer is 5/2
- In mixed form: 21/2
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