Add 80/28 and 3/90
1st number: 2 24/28, 2nd number: 3/90
80/28 + 3/90 is 607/210.
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,
80/28 = 80 × 45/28 × 45 = 3600/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
3/90 = 3 × 14/90 × 14 = 42/1260 - Add the two like fractions:
3600/1260 + 42/1260 = 3600 + 42/1260 = 3642/1260 - 3642/1260 simplified gives 607/210
- So, 80/28 + 3/90 = 607/210
In mixed form: 2187/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/28+6/90 80/56+3/90 80/28+9/90 80/84+3/90 80/28+15/90 80/28+21/90