Subtract 72/15 from 84/4
1st number: 21 0/4, 2nd number: 4 12/15
84/4 - 72/15 is 81/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
84/4 = 84 × 15/4 × 15 = 1260/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
72/15 = 72 × 4/15 × 4 = 288/60 - Subtract the two like fractions:
1260/60 - 288/60 = 1260 - 288/60 = 972/60 - After reducing the fraction, the answer is 81/5
- In mixed form: 161/5
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