Add 1/5 and 90/20
1st number: 1/5, 2nd number: 4 10/20
1/5 + 90/20 is 47/10.
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,
1/5 = 1 × 4/5 × 4 = 4/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
90/20 = 90 × 1/20 × 1 = 90/20 - Add the two like fractions:
4/20 + 90/20 = 4 + 90/20 = 94/20 - 94/20 simplified gives 47/10
- So, 1/5 + 90/20 = 47/10
In mixed form: 47/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/5+90/20 1/10+90/20 1/5+90/40 3/5+90/20 1/15+90/20 1/5+90/60 1/25+90/20 7/5+90/20 1/35+90/20