Add 90/10 and 28/20
1st number: 9 0/10, 2nd number: 1 8/20
90/10 + 28/20 is 52/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 10 × 2 = 20,
90/10 = 90 × 2/10 × 2 = 180/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
28/20 = 28 × 1/20 × 1 = 28/20 - Add the two like fractions:
180/20 + 28/20 = 180 + 28/20 = 208/20 - 208/20 simplified gives 52/5
- So, 90/10 + 28/20 = 52/5
In mixed form: 102/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/10+56/20 90/20+28/20 90/10+28/40 90/10+84/20 90/30+28/20 90/10+28/60 90/50+28/20 90/70+28/20