Add 72/10 and 10/90
1st number: 7 2/10, 2nd number: 10/90
72/10 + 10/90 is 329/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
72/10 = 72 × 9/10 × 9 = 648/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
10/90 = 10 × 1/90 × 1 = 10/90 - Add the two like fractions:
648/90 + 10/90 = 648 + 10/90 = 658/90 - 658/90 simplified gives 329/45
- So, 72/10 + 10/90 = 329/45
In mixed form: 714/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/10+20/90 72/20+10/90 72/10+30/90 72/30+10/90 72/10+50/90 72/50+10/90 72/10+70/90 72/70+10/90