Add 60/84 and 28/90
60/84 + 28/90 is 323/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
60/84 = 60 × 15/84 × 15 = 900/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
28/90 = 28 × 14/90 × 14 = 392/1260 - Add the two like fractions:
900/1260 + 392/1260 = 900 + 392/1260 = 1292/1260 - 1292/1260 simplified gives 323/315
- So, 60/84 + 28/90 = 323/315
In mixed form: 18/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/84+56/90 60/84+84/90