Add 70/5 and 4/21
1st number: 14 0/5, 2nd number: 4/21
70/5 + 4/21 is 298/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 5 × 21 = 105,
70/5 = 70 × 21/5 × 21 = 1470/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
4/21 = 4 × 5/21 × 5 = 20/105 - Add the two like fractions:
1470/105 + 20/105 = 1470 + 20/105 = 1490/105 - 1490/105 simplified gives 298/21
- So, 70/5 + 4/21 = 298/21
In mixed form: 144/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/5+8/21 70/10+4/21 70/5+4/42 70/5+12/21 70/15+4/21 70/5+4/63 70/5+20/21 70/25+4/21 70/5+28/21 70/35+4/21