Add 6/15 and 81/7, Solve 6/15 + 11 4/7 as a fraction

Add 6/15 and 81/7

1^st number: 6/15, 2^nd number: 11 4/7

6/15 + 81/7 is 419/35.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 15 × 7 = 105,
6/15 = 6 × 7/15 × 7 = 42/105
Likewise, for the 2nd fraction, since 7 × 15 = 105,
81/7 = 81 × 15/7 × 15 = 1215/105
Add the two like fractions:
42/105 + 1215/105 = 42 + 1215/105 = 1257/105
1257/105 simplified gives 419/35
So, 6/15 + 81/7 = 419/35
In mixed form: 1134/35

MathStep (Works offline)

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