Add 45/70 and 81/5
1st number: 45/70, 2nd number: 16 1/5
45/70 + 81/5 is 1179/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 5 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
45/70 = 45 × 1/70 × 1 = 45/70 - Likewise, for the 2nd fraction, since 5 × 14 = 70,
81/5 = 81 × 14/5 × 14 = 1134/70 - Add the two like fractions:
45/70 + 1134/70 = 45 + 1134/70 = 1179/70 - So, 45/70 + 81/5 = 1179/70
In mixed form: 1659/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/70+81/5 45/70+81/10 45/70+81/15 45/70+81/25 45/70+81/35