Add 84/4 and 30/15
1st number: 21 0/4, 2nd number: 2 0/15
84/4 + 30/15 is 23/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
84/4 = 84 × 15/4 × 15 = 1260/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
30/15 = 30 × 4/15 × 4 = 120/60 - Add the two like fractions:
1260/60 + 120/60 = 1260 + 120/60 = 1380/60 - 1380/60 simplified gives 23/1
- So, 84/4 + 30/15 = 23/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/4+60/15 84/8+30/15 84/4+90/15 84/12+30/15 84/4+30/45 84/20+30/15 84/4+30/75 84/28+30/15