Add 90/84 and 90/27
1st number: 1 6/84, 2nd number: 3 9/27
90/84 + 90/27 is 185/42.
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,
90/27 = 90 × 28/27 × 28 = 2520/756 - Add the two like fractions:
810/756 + 2520/756 = 810 + 2520/756 = 3330/756 - 3330/756 simplified gives 185/42
- So, 90/84 + 90/27 = 185/42
In mixed form: 417/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/84+90/54 90/84+90/81