Subtract 18/4 from 72/9
1st number: 8 0/9, 2nd number: 4 2/4
72/9 - 18/4 is 7/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 4 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
72/9 = 72 × 4/9 × 4 = 288/36 - Likewise, for the 2nd fraction, since 4 × 9 = 36,
18/4 = 18 × 9/4 × 9 = 162/36 - Subtract the two like fractions:
288/36 - 162/36 = 288 - 162/36 = 126/36 - After reducing the fraction, the answer is 7/2
- In mixed form: 31/2
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