Add 70/4 and 21/10
1st number: 17 2/4, 2nd number: 2 1/10
70/4 + 21/10 is 98/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
70/4 = 70 × 5/4 × 5 = 350/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
21/10 = 21 × 2/10 × 2 = 42/20 - Add the two like fractions:
350/20 + 42/20 = 350 + 42/20 = 392/20 - 392/20 simplified gives 98/5
- So, 70/4 + 21/10 = 98/5
In mixed form: 193/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/4+42/10 70/8+21/10 70/4+21/20 70/4+63/10 70/12+21/10 70/4+21/30 70/20+21/10 70/4+21/50 70/28+21/10 70/4+21/70