Add 4/90 and 4/84
4/90 + 4/84 is 29/315.
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,
4/90 = 4 × 14/90 × 14 = 56/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
4/84 = 4 × 15/84 × 15 = 60/1260 - Add the two like fractions:
56/1260 + 60/1260 = 56 + 60/1260 = 116/1260 - 116/1260 simplified gives 29/315
- So, 4/90 + 4/84 = 29/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/90+4/84 4/90+8/84 12/90+4/84 4/90+12/84 20/90+4/84 4/90+20/84 28/90+4/84 4/90+28/84