Subtract 84/45 from 72/18
1st number: 4 0/18, 2nd number: 1 39/45
72/18 - 84/45 is 32/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
72/18 = 72 × 5/18 × 5 = 360/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
84/45 = 84 × 2/45 × 2 = 168/90 - Subtract the two like fractions:
360/90 - 168/90 = 360 - 168/90 = 192/90 - After reducing the fraction, the answer is 32/15
- In mixed form: 22/15
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