Add 70/2 and 9/21
1st number: 35 0/2, 2nd number: 9/21
70/2 + 9/21 is 248/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
70/2 = 70 × 21/2 × 21 = 1470/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
9/21 = 9 × 2/21 × 2 = 18/42 - Add the two like fractions:
1470/42 + 18/42 = 1470 + 18/42 = 1488/42 - 1488/42 simplified gives 248/7
- So, 70/2 + 9/21 = 248/7
In mixed form: 353/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/2+18/21 70/4+9/21 70/2+9/42 70/2+27/21 70/6+9/21 70/2+9/63 70/2+45/21 70/10+9/21 70/2+63/21 70/14+9/21