Add 72/10 and 9/80
1st number: 7 2/10, 2nd number: 9/80
72/10 + 9/80 is 117/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 10 × 8 = 80,
72/10 = 72 × 8/10 × 8 = 576/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
9/80 = 9 × 1/80 × 1 = 9/80 - Add the two like fractions:
576/80 + 9/80 = 576 + 9/80 = 585/80 - 585/80 simplified gives 117/16
- So, 72/10 + 9/80 = 117/16
In mixed form: 75/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/10+18/80 72/20+9/80 72/10+27/80 72/30+9/80 72/10+45/80 72/50+9/80 72/10+63/80 72/70+9/80