Add 90/84 and 3/90
1st number: 1 6/84, 2nd number: 3/90
90/84 + 3/90 is 116/105.
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,
90/84 = 90 × 15/84 × 15 = 1350/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
3/90 = 3 × 14/90 × 14 = 42/1260 - Add the two like fractions:
1350/1260 + 42/1260 = 1350 + 42/1260 = 1392/1260 - 1392/1260 simplified gives 116/105
- So, 90/84 + 3/90 = 116/105
In mixed form: 111/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/84+6/90 90/84+9/90 90/84+15/90 90/84+21/90