Add 42/56 and 3/72
42/56 + 3/72 is 19/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
42/56 = 42 × 9/56 × 9 = 378/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
3/72 = 3 × 7/72 × 7 = 21/504 - Add the two like fractions:
378/504 + 21/504 = 378 + 21/504 = 399/504 - 399/504 simplified gives 19/24
- So, 42/56 + 3/72 = 19/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56+3/72 42/56+6/72 42/56+9/72 42/56+15/72 42/56+21/72