Subtract 18/20 from 72/8
1st number: 9 0/8, 2nd number: 18/20
72/8 - 18/20 is 81/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
72/8 = 72 × 5/8 × 5 = 360/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
18/20 = 18 × 2/20 × 2 = 36/40 - Subtract the two like fractions:
360/40 - 36/40 = 360 - 36/40 = 324/40 - After reducing the fraction, the answer is 81/10
- In mixed form: 81/10
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