Subtract 9/30 from 21/5
1st number: 4 1/5, 2nd number: 9/30
21/5 - 9/30 is 39/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 5 × 6 = 30,
21/5 = 21 × 6/5 × 6 = 126/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
9/30 = 9 × 1/30 × 1 = 9/30 - Subtract the two like fractions:
126/30 - 9/30 = 126 - 9/30 = 117/30 - After reducing the fraction, the answer is 39/10
- In mixed form: 39/10
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