Add 8/84 and 3/90
8/84 + 3/90 is 9/70.
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,
8/84 = 8 × 15/84 × 15 = 120/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
3/90 = 3 × 14/90 × 14 = 42/1260 - Add the two like fractions:
120/1260 + 42/1260 = 120 + 42/1260 = 162/1260 - 162/1260 simplified gives 9/70
- So, 8/84 + 3/90 = 9/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/84+3/90 8/84+6/90 24/84+3/90 8/84+9/90 40/84+3/90 8/84+15/90 56/84+3/90 8/84+21/90