Subtract 98/42 from 7/45
1st number: 7/45, 2nd number: 2 14/42
7/45 - 98/42 is -98/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
7/45 = 7 × 14/45 × 14 = 98/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
98/42 = 98 × 15/42 × 15 = 1470/630 - Subtract the two like fractions:
98/630 - 1470/630 = 98 - 1470/630 = -1372/630 - After reducing the fraction, the answer is -98/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/45-98/42 7/90-98/42 7/45-98/84 21/45-98/42 35/45-98/42 49/45-98/42