Add 90/27 and 20/35
1st number: 3 9/27, 2nd number: 20/35
90/27 + 20/35 is 82/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 35 is 945
Next, find the equivalent fraction of both fractional numbers with denominator 945 - For the 1st fraction, since 27 × 35 = 945,
90/27 = 90 × 35/27 × 35 = 3150/945 - Likewise, for the 2nd fraction, since 35 × 27 = 945,
20/35 = 20 × 27/35 × 27 = 540/945 - Add the two like fractions:
3150/945 + 540/945 = 3150 + 540/945 = 3690/945 - 3690/945 simplified gives 82/21
- So, 90/27 + 20/35 = 82/21
In mixed form: 319/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/27+40/35 90/54+20/35 90/27+20/70 90/27+60/35 90/81+20/35