Add 90/27 and 20/15
1st number: 3 9/27, 2nd number: 1 5/15
90/27 + 20/15 is 14/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 15 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 27 × 5 = 135,
90/27 = 90 × 5/27 × 5 = 450/135 - Likewise, for the 2nd fraction, since 15 × 9 = 135,
20/15 = 20 × 9/15 × 9 = 180/135 - Add the two like fractions:
450/135 + 180/135 = 450 + 180/135 = 630/135 - 630/135 simplified gives 14/3
- So, 90/27 + 20/15 = 14/3
In mixed form: 42/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/27+40/15 90/54+20/15 90/27+20/30 90/27+60/15 90/81+20/15 90/27+20/45 90/27+20/75