Add 70/20 and 15/16
1st number: 3 10/20, 2nd number: 15/16
70/20 + 15/16 is 71/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
70/20 = 70 × 4/20 × 4 = 280/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
15/16 = 15 × 5/16 × 5 = 75/80 - Add the two like fractions:
280/80 + 75/80 = 280 + 75/80 = 355/80 - 355/80 simplified gives 71/16
- So, 70/20 + 15/16 = 71/16
In mixed form: 47/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/20+30/16 70/40+15/16 70/20+15/32 70/20+45/16 70/60+15/16 70/20+15/48 70/20+75/16 70/20+15/80