Add 70/5 and 81/7, Solve 14 0/5 + 11 4/7 as a fraction

Add 70/5 and 81/7

1^st number: 14 0/5, 2^nd number: 11 4/7

70/5 + 81/7 is 179/7.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 7 is 35

Next, find the equivalent fraction of both fractional numbers with denominator 35
For the 1st fraction, since 5 × 7 = 35,
70/5 = 70 × 7/5 × 7 = 490/35
Likewise, for the 2nd fraction, since 7 × 5 = 35,
81/7 = 81 × 5/7 × 5 = 405/35
Add the two like fractions:
490/35 + 405/35 = 490 + 405/35 = 895/35
895/35 simplified gives 179/7
So, 70/5 + 81/7 = 179/7
In mixed form: 254/7

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad