Add 72/90 and 35/5
1st number: 72/90, 2nd number: 7 0/5
72/90 + 35/5 is 39/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 5 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
72/90 = 72 × 1/90 × 1 = 72/90 - Likewise, for the 2nd fraction, since 5 × 18 = 90,
35/5 = 35 × 18/5 × 18 = 630/90 - Add the two like fractions:
72/90 + 630/90 = 72 + 630/90 = 702/90 - 702/90 simplified gives 39/5
- So, 72/90 + 35/5 = 39/5
In mixed form: 74/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/90+70/5 72/90+35/10 72/90+35/15 72/90+35/25