Subtract 30/15 from 7/9
1st number: 7/9, 2nd number: 2 0/15
7/9 - 30/15 is -11/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 15 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
7/9 = 7 × 5/9 × 5 = 35/45 - Likewise, for the 2nd fraction, since 15 × 3 = 45,
30/15 = 30 × 3/15 × 3 = 90/45 - Subtract the two like fractions:
35/45 - 90/45 = 35 - 90/45 = -55/45 - After reducing the fraction, the answer is -11/9
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