Add 30/90 and 3/84
30/90 + 3/84 is 31/84.
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,
30/90 = 30 × 14/90 × 14 = 420/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
3/84 = 3 × 15/84 × 15 = 45/1260 - Add the two like fractions:
420/1260 + 45/1260 = 420 + 45/1260 = 465/1260 - 465/1260 simplified gives 31/84
- So, 30/90 + 3/84 = 31/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/90+3/84 30/90+6/84 30/90+9/84 30/90+15/84 30/90+21/84