Add 15/12 and 90/14
1st number: 1 3/12, 2nd number: 6 6/14
15/12 + 90/14 is 215/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 14 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
15/12 = 15 × 7/12 × 7 = 105/84 - Likewise, for the 2nd fraction, since 14 × 6 = 84,
90/14 = 90 × 6/14 × 6 = 540/84 - Add the two like fractions:
105/84 + 540/84 = 105 + 540/84 = 645/84 - 645/84 simplified gives 215/28
- So, 15/12 + 90/14 = 215/28
In mixed form: 719/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12+90/14 15/24+90/14 15/12+90/28 45/12+90/14 15/36+90/14 15/12+90/42 75/12+90/14 15/60+90/14 15/12+90/70 15/84+90/14 15/12+90/98