Add 42/18 and 49/72
1st number: 2 6/18, 2nd number: 49/72
42/18 + 49/72 is 217/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
42/18 = 42 × 4/18 × 4 = 168/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
49/72 = 49 × 1/72 × 1 = 49/72 - Add the two like fractions:
168/72 + 49/72 = 168 + 49/72 = 217/72 - So, 42/18 + 49/72 = 217/72
In mixed form: 31/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+49/72 42/18+98/72 42/36+49/72 42/54+49/72 42/90+49/72