Add 42/48 and 15/18
42/48 + 15/18 is 41/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 18 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 48 × 3 = 144,
42/48 = 42 × 3/48 × 3 = 126/144 - Likewise, for the 2nd fraction, since 18 × 8 = 144,
15/18 = 15 × 8/18 × 8 = 120/144 - Add the two like fractions:
126/144 + 120/144 = 126 + 120/144 = 246/144 - 246/144 simplified gives 41/24
- So, 42/48 + 15/18 = 41/24
In mixed form: 117/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/48+15/18 42/48+30/18 42/96+15/18 42/48+15/36 42/48+45/18 42/48+15/54 42/48+75/18 42/48+15/90