Add 42/15 and 25/8
1st number: 2 12/15, 2nd number: 3 1/8
42/15 + 25/8 is 237/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
42/15 = 42 × 8/15 × 8 = 336/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
25/8 = 25 × 15/8 × 15 = 375/120 - Add the two like fractions:
336/120 + 375/120 = 336 + 375/120 = 711/120 - 711/120 simplified gives 237/40
- So, 42/15 + 25/8 = 237/40
In mixed form: 537/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/15+25/8 42/15+50/8 42/30+25/8 42/15+25/16 42/15+75/8 42/45+25/8 42/15+25/24 42/75+25/8 42/15+25/40 42/15+25/56