Subtract 72/80 from 18/2
1st number: 9 0/2, 2nd number: 72/80
18/2 - 72/80 is 81/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 2 × 40 = 80,
18/2 = 18 × 40/2 × 40 = 720/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
72/80 = 72 × 1/80 × 1 = 72/80 - Subtract the two like fractions:
720/80 - 72/80 = 720 - 72/80 = 648/80 - After reducing the fraction, the answer is 81/10
- In mixed form: 81/10
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