Add 80/90 and 2/28
80/90 + 2/28 is 121/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
80/90 = 80 × 14/90 × 14 = 1120/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
2/28 = 2 × 45/28 × 45 = 90/1260 - Add the two like fractions:
1120/1260 + 90/1260 = 1120 + 90/1260 = 1210/1260 - 1210/1260 simplified gives 121/126
- So, 80/90 + 2/28 = 121/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90+4/28 80/90+2/56 80/90+6/28 80/90+2/84 80/90+10/28 80/90+14/28