Subtract 9/5 from 72/4
1st number: 18 0/4, 2nd number: 1 4/5
72/4 - 9/5 is 81/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
72/4 = 72 × 5/4 × 5 = 360/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
9/5 = 9 × 4/5 × 4 = 36/20 - Subtract the two like fractions:
360/20 - 36/20 = 360 - 36/20 = 324/20 - After reducing the fraction, the answer is 81/5
- In mixed form: 161/5
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