Add 21/2 and 49/70
1st number: 10 1/2, 2nd number: 49/70
21/2 + 49/70 is 56/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 2 × 35 = 70,
21/2 = 21 × 35/2 × 35 = 735/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
49/70 = 49 × 1/70 × 1 = 49/70 - Add the two like fractions:
735/70 + 49/70 = 735 + 49/70 = 784/70 - 784/70 simplified gives 56/5
- So, 21/2 + 49/70 = 56/5
In mixed form: 111/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2+49/70 21/2+98/70 21/4+49/70 63/2+49/70 21/6+49/70 21/10+49/70 21/14+49/70