Subtract 20/30 from 21/4
1st number: 5 1/4, 2nd number: 20/30
21/4 - 20/30 is 55/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
21/4 = 21 × 15/4 × 15 = 315/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
20/30 = 20 × 2/30 × 2 = 40/60 - Subtract the two like fractions:
315/60 - 40/60 = 315 - 40/60 = 275/60 - After reducing the fraction, the answer is 55/12
- In mixed form: 47/12
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