Add 20/25 and 25/90
20/25 + 25/90 is 97/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 90 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 90 × 5 = 450,
25/90 = 25 × 5/90 × 5 = 125/450 - Add the two like fractions:
360/450 + 125/450 = 360 + 125/450 = 485/450 - 485/450 simplified gives 97/90
- So, 20/25 + 25/90 = 97/90
In mixed form: 17/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/25+25/90 20/25+50/90 20/50+25/90 60/25+25/90 20/25+75/90 20/75+25/90