Add 7/42 and 63/10, Solve 7/42 + 6 3/10 as a fraction

Add 7/42 and 63/10

1^st number: 7/42, 2^nd number: 6 3/10

7/42 + 63/10 is 97/15.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
7/42 = 7 × 5/42 × 5 = 35/210
Likewise, for the 2nd fraction, since 10 × 21 = 210,
63/10 = 63 × 21/10 × 21 = 1323/210
Add the two like fractions:
35/210 + 1323/210 = 35 + 1323/210 = 1358/210
1358/210 simplified gives 97/15
So, 7/42 + 63/10 = 97/15
In mixed form: 67/15

MathStep (Works offline)

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