Add 90/15 and 20/45
1st number: 6 0/15, 2nd number: 20/45
90/15 + 20/45 is 58/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
90/15 = 90 × 3/15 × 3 = 270/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
20/45 = 20 × 1/45 × 1 = 20/45 - Add the two like fractions:
270/45 + 20/45 = 270 + 20/45 = 290/45 - 290/45 simplified gives 58/9
- So, 90/15 + 20/45 = 58/9
In mixed form: 64/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15+40/45 90/30+20/45 90/15+20/90 90/15+60/45 90/45+20/45 90/75+20/45