Add 1/12 and 90/7
1st number: 1/12, 2nd number: 12 6/7
1/12 + 90/7 is 1087/84.
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,
1/12 = 1 × 7/12 × 7 = 7/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
90/7 = 90 × 12/7 × 12 = 1080/84 - Add the two like fractions:
7/84 + 1080/84 = 7 + 1080/84 = 1087/84 - So, 1/12 + 90/7 = 1087/84
In mixed form: 1279/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/12+90/7 1/24+90/7 1/12+90/14 3/12+90/7 1/36+90/7 1/12+90/21 5/12+90/7 1/60+90/7 1/12+90/35 7/12+90/7 1/84+90/7 1/12+90/49