Subtract 45/7 from 98/18
1st number: 5 8/18, 2nd number: 6 3/7
98/18 - 45/7 is -62/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
98/18 = 98 × 7/18 × 7 = 686/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
45/7 = 45 × 18/7 × 18 = 810/126 - Subtract the two like fractions:
686/126 - 810/126 = 686 - 810/126 = -124/126 - After reducing the fraction, the answer is -62/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/18-90/7 98/36-45/7 98/18-45/14 98/54-45/7 98/18-45/21 98/90-45/7 98/18-45/35 98/18-45/49