Subtract 18/16 from 72/20
1st number: 3 12/20, 2nd number: 1 2/16
72/20 - 18/16 is 99/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
72/20 = 72 × 4/20 × 4 = 288/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
18/16 = 18 × 5/16 × 5 = 90/80 - Subtract the two like fractions:
288/80 - 90/80 = 288 - 90/80 = 198/80 - After reducing the fraction, the answer is 99/40
- In mixed form: 219/40
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