Subtract 15/7 from 30/8
1st number: 3 6/8, 2nd number: 2 1/7
30/8 - 15/7 is 45/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 7 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 8 × 7 = 56,
30/8 = 30 × 7/8 × 7 = 210/56 - Likewise, for the 2nd fraction, since 7 × 8 = 56,
15/7 = 15 × 8/7 × 8 = 120/56 - Subtract the two like fractions:
210/56 - 120/56 = 210 - 120/56 = 90/56 - After reducing the fraction, the answer is 45/28
- In mixed form: 117/28
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