Subtract 72/5 from 30/80
1st number: 30/80, 2nd number: 14 2/5
30/80 - 72/5 is -561/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 5 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
30/80 = 30 × 1/80 × 1 = 30/80 - Likewise, for the 2nd fraction, since 5 × 16 = 80,
72/5 = 72 × 16/5 × 16 = 1152/80 - Subtract the two like fractions:
30/80 - 1152/80 = 30 - 1152/80 = -1122/80 - After reducing the fraction, the answer is -561/40
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