Add 28/5 and 90/20
1st number: 5 3/5, 2nd number: 4 10/20
28/5 + 90/20 is 101/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 5 × 4 = 20,
28/5 = 28 × 4/5 × 4 = 112/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
90/20 = 90 × 1/20 × 1 = 90/20 - Add the two like fractions:
112/20 + 90/20 = 112 + 90/20 = 202/20 - 202/20 simplified gives 101/10
- So, 28/5 + 90/20 = 101/10
In mixed form: 101/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/5+90/20 28/10+90/20 28/5+90/40 84/5+90/20 28/15+90/20 28/5+90/60 28/25+90/20 28/35+90/20