Add 9/90 and 4/84
9/90 + 4/84 is 31/210.
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,
9/90 = 9 × 14/90 × 14 = 126/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
4/84 = 4 × 15/84 × 15 = 60/1260 - Add the two like fractions:
126/1260 + 60/1260 = 126 + 60/1260 = 186/1260 - 186/1260 simplified gives 31/210
- So, 9/90 + 4/84 = 31/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/90+4/84 9/90+8/84 27/90+4/84 9/90+12/84 45/90+4/84 9/90+20/84 63/90+4/84 9/90+28/84