Add 10/42 and 25/10, Solve 10/42 + 2 5/10 as a fraction

Add 10/42 and 25/10

1^st number: 10/42, 2^nd number: 2 5/10

10/42 + 25/10 is 115/42.

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,
10/42 = 10 × 5/42 × 5 = 50/210
Likewise, for the 2nd fraction, since 10 × 21 = 210,
25/10 = 25 × 21/10 × 21 = 525/210
Add the two like fractions:
50/210 + 525/210 = 50 + 525/210 = 575/210
575/210 simplified gives 115/42
So, 10/42 + 25/10 = 115/42
In mixed form: 231/42

MathStep (Works offline)

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