Add 90/30 and 28/20
1st number: 3 0/30, 2nd number: 1 8/20
90/30 + 28/20 is 22/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
90/30 = 90 × 2/30 × 2 = 180/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
28/20 = 28 × 3/20 × 3 = 84/60 - Add the two like fractions:
180/60 + 84/60 = 180 + 84/60 = 264/60 - 264/60 simplified gives 22/5
- So, 90/30 + 28/20 = 22/5
In mixed form: 42/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30+56/20 90/60+28/20 90/30+28/40 90/30+84/20 90/30+28/60