Add 72/90 and 5/50
72/90 + 5/50 is 9/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 50 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 90 × 5 = 450,
72/90 = 72 × 5/90 × 5 = 360/450 - Likewise, for the 2nd fraction, since 50 × 9 = 450,
5/50 = 5 × 9/50 × 9 = 45/450 - Add the two like fractions:
360/450 + 45/450 = 360 + 45/450 = 405/450 - 405/450 simplified gives 9/10
- So, 72/90 + 5/50 = 9/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/90+10/50 72/90+15/50 72/90+25/50 72/90+35/50