Add 42/72 and 18/8
1st number: 42/72, 2nd number: 2 2/8
42/72 + 18/8 is 17/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
42/72 = 42 × 1/72 × 1 = 42/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
18/8 = 18 × 9/8 × 9 = 162/72 - Add the two like fractions:
42/72 + 162/72 = 42 + 162/72 = 204/72 - 204/72 simplified gives 17/6
- So, 42/72 + 18/8 = 17/6
In mixed form: 25/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/72+18/8 42/72+36/8 42/72+18/16 42/72+54/8 42/72+18/24 42/72+90/8 42/72+18/40 42/72+18/56