Add 80/70 and 9/27
1st number: 1 10/70, 2nd number: 9/27
80/70 + 9/27 is 31/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 27 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 70 × 27 = 1890,
80/70 = 80 × 27/70 × 27 = 2160/1890 - Likewise, for the 2nd fraction, since 27 × 70 = 1890,
9/27 = 9 × 70/27 × 70 = 630/1890 - Add the two like fractions:
2160/1890 + 630/1890 = 2160 + 630/1890 = 2790/1890 - 2790/1890 simplified gives 31/21
- So, 80/70 + 9/27 = 31/21
In mixed form: 110/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/70+18/27 80/70+9/54 80/70+9/81 80/70+45/27 80/70+63/27