Add 72/12 and 42/7
1st number: 6 0/12, 2nd number: 6 0/7
72/12 + 42/7 is 12/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
72/12 = 72 × 7/12 × 7 = 504/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
42/7 = 42 × 12/7 × 12 = 504/84 - Add the two like fractions:
504/84 + 504/84 = 504 + 504/84 = 1008/84 - 1008/84 simplified gives 12/1
- So, 72/12 + 42/7 = 12/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/12+84/7 72/24+42/7 72/12+42/14 72/36+42/7 72/12+42/21 72/60+42/7 72/12+42/35 72/84+42/7 72/12+42/49