Add 20/25 and 90/18
1st number: 20/25, 2nd number: 5 0/18
20/25 + 90/18 is 29/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 25 × 18 = 450,
20/25 = 20 × 18/25 × 18 = 360/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
90/18 = 90 × 25/18 × 25 = 2250/450 - Add the two like fractions:
360/450 + 2250/450 = 360 + 2250/450 = 2610/450 - 2610/450 simplified gives 29/5
- So, 20/25 + 90/18 = 29/5
In mixed form: 54/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/25+90/18 20/50+90/18 20/25+90/36 60/25+90/18 20/75+90/18 20/25+90/54