Subtract 28/14 from 7/45
1st number: 7/45, 2nd number: 2 0/14
7/45 - 28/14 is -83/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 14 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 14 × 45 = 630,
28/14 = 28 × 45/14 × 45 = 1260/630 - Subtract the two like fractions:
98/630 - 1260/630 = 98 - 1260/630 = -1162/630 - After reducing the fraction, the answer is -83/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/45-28/14 7/45-56/14 7/90-28/14 21/45-28/14 7/45-84/14 7/45-28/42 35/45-28/14 7/45-28/70 49/45-28/14 7/45-28/98