Add 70/21 and 45/6
1st number: 3 7/21, 2nd number: 7 3/6
70/21 + 45/6 is 65/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
70/21 = 70 × 2/21 × 2 = 140/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
45/6 = 45 × 7/6 × 7 = 315/42 - Add the two like fractions:
140/42 + 315/42 = 140 + 315/42 = 455/42 - 455/42 simplified gives 65/6
- So, 70/21 + 45/6 = 65/6
In mixed form: 105/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21+90/6 70/42+45/6 70/21+45/12 70/63+45/6 70/21+45/18 70/21+45/30 70/21+45/42