Add 30/15 and 35/40
1st number: 2 0/15, 2nd number: 35/40
30/15 + 35/40 is 23/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
30/15 = 30 × 8/15 × 8 = 240/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
35/40 = 35 × 3/40 × 3 = 105/120 - Add the two like fractions:
240/120 + 105/120 = 240 + 105/120 = 345/120 - 345/120 simplified gives 23/8
- So, 30/15 + 35/40 = 23/8
In mixed form: 27/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/15+35/40 30/15+70/40 30/15+35/80 90/15+35/40 30/45+35/40 30/75+35/40