Add 42/56 and 1/72
42/56 + 1/72 is 55/72.
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,
1/72 = 1 × 7/72 × 7 = 7/504 - Add the two like fractions:
378/504 + 7/504 = 378 + 7/504 = 385/504 - 385/504 simplified gives 55/72
- So, 42/56 + 1/72 = 55/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56+1/72 42/56+2/72 42/56+3/72 42/56+5/72 42/56+7/72