Subtract 72/54 from 18/30
1st number: 18/30, 2nd number: 1 18/54
18/30 - 72/54 is -11/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
18/30 = 18 × 9/30 × 9 = 162/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
72/54 = 72 × 5/54 × 5 = 360/270 - Subtract the two like fractions:
162/270 - 360/270 = 162 - 360/270 = -198/270 - After reducing the fraction, the answer is -11/15
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