Subtract 28/8 from 20/30
1st number: 20/30, 2nd number: 3 4/8
20/30 - 28/8 is -17/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
20/30 = 20 × 4/30 × 4 = 80/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
28/8 = 28 × 15/8 × 15 = 420/120 - Subtract the two like fractions:
80/120 - 420/120 = 80 - 420/120 = -340/120 - After reducing the fraction, the answer is -17/6
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