Add 70/10 and 21/54
1st number: 7 0/10, 2nd number: 21/54
70/10 + 21/54 is 133/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 10 × 27 = 270,
70/10 = 70 × 27/10 × 27 = 1890/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
21/54 = 21 × 5/54 × 5 = 105/270 - Add the two like fractions:
1890/270 + 105/270 = 1890 + 105/270 = 1995/270 - 1995/270 simplified gives 133/18
- So, 70/10 + 21/54 = 133/18
In mixed form: 77/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/10+42/54 70/20+21/54 70/10+63/54 70/30+21/54 70/50+21/54