Add 70/4 and 2/21
1st number: 17 2/4, 2nd number: 2/21
70/4 + 2/21 is 739/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
70/4 = 70 × 21/4 × 21 = 1470/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
2/21 = 2 × 4/21 × 4 = 8/84 - Add the two like fractions:
1470/84 + 8/84 = 1470 + 8/84 = 1478/84 - 1478/84 simplified gives 739/42
- So, 70/4 + 2/21 = 739/42
In mixed form: 1725/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/4+4/21 70/8+2/21 70/4+2/42 70/4+6/21 70/12+2/21 70/4+2/63 70/4+10/21 70/20+2/21 70/4+14/21 70/28+2/21