Add 27/10 and 45/7
1st number: 2 7/10, 2nd number: 6 3/7
27/10 + 45/7 is 639/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
27/10 = 27 × 7/10 × 7 = 189/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
45/7 = 45 × 10/7 × 10 = 450/70 - Add the two like fractions:
189/70 + 450/70 = 189 + 450/70 = 639/70 - So, 27/10 + 45/7 = 639/70
In mixed form: 99/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/10+45/7 27/10+90/7 27/20+45/7 27/10+45/14 81/10+45/7 27/30+45/7 27/10+45/21 27/50+45/7 27/10+45/35 27/70+45/7 27/10+45/49