Add 90/25 and 18/20
1st number: 3 15/25, 2nd number: 18/20
90/25 + 18/20 is 9/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 20 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 25 × 4 = 100,
90/25 = 90 × 4/25 × 4 = 360/100 - Likewise, for the 2nd fraction, since 20 × 5 = 100,
18/20 = 18 × 5/20 × 5 = 90/100 - Add the two like fractions:
360/100 + 90/100 = 360 + 90/100 = 450/100 - 450/100 simplified gives 9/2
- So, 90/25 + 18/20 = 9/2
In mixed form: 41/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/25+36/20 90/50+18/20 90/25+18/40 90/25+54/20 90/75+18/20 90/25+18/60 90/25+90/20