Add 90/84 and 30/27
1st number: 1 6/84, 2nd number: 1 3/27
90/84 + 30/27 is 275/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 84 × 9 = 756,
90/84 = 90 × 9/84 × 9 = 810/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
30/27 = 30 × 28/27 × 28 = 840/756 - Add the two like fractions:
810/756 + 840/756 = 810 + 840/756 = 1650/756 - 1650/756 simplified gives 275/126
- So, 90/84 + 30/27 = 275/126
In mixed form: 223/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/84+60/27 90/84+30/54 90/84+90/27 90/84+30/81