Add 35/10 and 48/21, Solve 3 5/10 + 2 6/21 as a fraction

Add 35/10 and 48/21

1^st number: 3 5/10, 2^nd number: 2 6/21

35/10 + 48/21 is 81/14.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 10 × 21 = 210,
35/10 = 35 × 21/10 × 21 = 735/210
Likewise, for the 2nd fraction, since 21 × 10 = 210,
48/21 = 48 × 10/21 × 10 = 480/210
Add the two like fractions:
735/210 + 480/210 = 735 + 480/210 = 1215/210
1215/210 simplified gives 81/14
So, 35/10 + 48/21 = 81/14
In mixed form: 511/14

MathStep (Works offline)

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