Add 72/10 and 63/70
1st number: 7 2/10, 2nd number: 63/70
72/10 + 63/70 is 81/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
72/10 = 72 × 7/10 × 7 = 504/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
63/70 = 63 × 1/70 × 1 = 63/70 - Add the two like fractions:
504/70 + 63/70 = 504 + 63/70 = 567/70 - 567/70 simplified gives 81/10
- So, 72/10 + 63/70 = 81/10
In mixed form: 81/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/20+63/70 72/30+63/70 72/50+63/70 72/70+63/70