Add 6/42 and 42/72
6/42 + 42/72 is 61/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 42 × 12 = 504,
6/42 = 6 × 12/42 × 12 = 72/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
42/72 = 42 × 7/72 × 7 = 294/504 - Add the two like fractions:
72/504 + 294/504 = 72 + 294/504 = 366/504 - 366/504 simplified gives 61/84
- So, 6/42 + 42/72 = 61/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/42+42/72 6/42+84/72 6/84+42/72 18/42+42/72 30/42+42/72