Add 28/90 and 14/84
28/90 + 14/84 is 43/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
28/90 = 28 × 14/90 × 14 = 392/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
14/84 = 14 × 15/84 × 15 = 210/1260 - Add the two like fractions:
392/1260 + 210/1260 = 392 + 210/1260 = 602/1260 - 602/1260 simplified gives 43/90
- So, 28/90 + 14/84 = 43/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90+14/84 28/90+28/84 84/90+14/84 28/90+42/84 28/90+70/84 28/90+98/84