Subtract 7/15 from 42/9
1st number: 4 6/9, 2nd number: 7/15
42/9 - 7/15 is 21/5.
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,
42/9 = 42 × 5/9 × 5 = 210/45 - Likewise, for the 2nd fraction, since 15 × 3 = 45,
7/15 = 7 × 3/15 × 3 = 21/45 - Subtract the two like fractions:
210/45 - 21/45 = 210 - 21/45 = 189/45 - After reducing the fraction, the answer is 21/5
- In mixed form: 41/5
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