Add 90/15 and 24/20
1st number: 6 0/15, 2nd number: 1 4/20
90/15 + 24/20 is 36/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
90/15 = 90 × 4/15 × 4 = 360/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
24/20 = 24 × 3/20 × 3 = 72/60 - Add the two like fractions:
360/60 + 72/60 = 360 + 72/60 = 432/60 - 432/60 simplified gives 36/5
- So, 90/15 + 24/20 = 36/5
In mixed form: 71/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15+48/20 90/30+24/20 90/15+24/40 90/15+72/20 90/45+24/20 90/15+24/60 90/75+24/20