Add 9/84 and 3/90
9/84 + 3/90 is 59/420.
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,
9/84 = 9 × 15/84 × 15 = 135/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
3/90 = 3 × 14/90 × 14 = 42/1260 - Add the two like fractions:
135/1260 + 42/1260 = 135 + 42/1260 = 177/1260 - 177/1260 simplified gives 59/420
- So, 9/84 + 3/90 = 59/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/84+3/90 9/84+6/90 27/84+3/90 9/84+9/90 45/84+3/90 9/84+15/90 63/84+3/90 9/84+21/90