Subtract 12/5 from 9/30
1st number: 9/30, 2nd number: 2 2/5
9/30 - 12/5 is -21/10.
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,
12/5 = 12 × 6/5 × 6 = 72/30 - Subtract the two like fractions:
9/30 - 72/30 = 9 - 72/30 = -63/30 - After reducing the fraction, the answer is -21/10
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