Add 7/45 and 42/28
1st number: 7/45, 2nd number: 1 14/28
7/45 + 42/28 is 149/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 45 × 28 = 1260,
7/45 = 7 × 28/45 × 28 = 196/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
42/28 = 42 × 45/28 × 45 = 1890/1260 - Add the two like fractions:
196/1260 + 1890/1260 = 196 + 1890/1260 = 2086/1260 - 2086/1260 simplified gives 149/90
- So, 7/45 + 42/28 = 149/90
In mixed form: 159/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/45+42/28 7/45+84/28 7/90+42/28 7/45+42/56 21/45+42/28 7/45+42/84 35/45+42/28 49/45+42/28