Add 18/20 and 70/15
1st number: 18/20, 2nd number: 4 10/15
18/20 + 70/15 is 167/30.
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,
18/20 = 18 × 3/20 × 3 = 54/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
70/15 = 70 × 4/15 × 4 = 280/60 - Add the two like fractions:
54/60 + 280/60 = 54 + 280/60 = 334/60 - 334/60 simplified gives 167/30
- So, 18/20 + 70/15 = 167/30
In mixed form: 517/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/20+70/15 18/40+70/15 18/20+70/30 54/20+70/15 18/60+70/15 18/20+70/45 90/20+70/15 18/20+70/75