Add 7/12 and 90/84
1st number: 7/12, 2nd number: 1 6/84
7/12 + 90/84 is 139/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
7/12 = 7 × 7/12 × 7 = 49/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
90/84 = 90 × 1/84 × 1 = 90/84 - Add the two like fractions:
49/84 + 90/84 = 49 + 90/84 = 139/84 - So, 7/12 + 90/84 = 139/84
In mixed form: 155/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/12+90/84 7/24+90/84 21/12+90/84 7/36+90/84 35/12+90/84 7/60+90/84 49/12+90/84 7/84+90/84