Add 70/28 and 49/90
1st number: 2 14/28, 2nd number: 49/90
70/28 + 49/90 is 137/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
70/28 = 70 × 45/28 × 45 = 3150/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
49/90 = 49 × 14/90 × 14 = 686/1260 - Add the two like fractions:
3150/1260 + 686/1260 = 3150 + 686/1260 = 3836/1260 - 3836/1260 simplified gives 137/45
- So, 70/28 + 49/90 = 137/45
In mixed form: 32/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/28+98/90 70/56+49/90 70/84+49/90