Add 70/20 and 40/15
1st number: 3 10/20, 2nd number: 2 10/15
70/20 + 40/15 is 37/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
70/20 = 70 × 3/20 × 3 = 210/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
40/15 = 40 × 4/15 × 4 = 160/60 - Add the two like fractions:
210/60 + 160/60 = 210 + 160/60 = 370/60 - 370/60 simplified gives 37/6
- So, 70/20 + 40/15 = 37/6
In mixed form: 61/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/20+80/15 70/40+40/15 70/20+40/30 70/60+40/15 70/20+40/45 70/20+40/75