Add 84/60 and 12/9
1st number: 1 24/60, 2nd number: 1 3/9
84/60 + 12/9 is 41/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
84/60 = 84 × 3/60 × 3 = 252/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
12/9 = 12 × 20/9 × 20 = 240/180 - Add the two like fractions:
252/180 + 240/180 = 252 + 240/180 = 492/180 - 492/180 simplified gives 41/15
- So, 84/60 + 12/9 = 41/15
In mixed form: 211/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/60+24/9 84/60+12/18 84/60+36/9 84/60+12/27 84/60+60/9 84/60+12/45 84/60+84/9 84/60+12/63