Subtract 98/54 from 18/42
1st number: 18/42, 2nd number: 1 44/54
18/42 - 98/54 is -262/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
18/42 = 18 × 9/42 × 9 = 162/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
98/54 = 98 × 7/54 × 7 = 686/378 - Subtract the two like fractions:
162/378 - 686/378 = 162 - 686/378 = -524/378 - After reducing the fraction, the answer is -262/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/42-98/54 18/84-98/54 54/42-98/54 90/42-98/54