Add 42/18 and 3/72
1st number: 2 6/18, 2nd number: 3/72
42/18 + 3/72 is 19/8.
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,
3/72 = 3 × 1/72 × 1 = 3/72 - Add the two like fractions:
168/72 + 3/72 = 168 + 3/72 = 171/72 - 171/72 simplified gives 19/8
- So, 42/18 + 3/72 = 19/8
In mixed form: 23/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+3/72 42/18+6/72 42/36+3/72 42/18+9/72 42/54+3/72 42/18+15/72 42/90+3/72 42/18+21/72