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