Add 16/5 and 35/21
1st number: 3 1/5, 2nd number: 1 14/21
16/5 + 35/21 is 73/15.
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,
16/5 = 16 × 21/5 × 21 = 336/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
35/21 = 35 × 5/21 × 5 = 175/105 - Add the two like fractions:
336/105 + 175/105 = 336 + 175/105 = 511/105 - 511/105 simplified gives 73/15
- So, 16/5 + 35/21 = 73/15
In mixed form: 413/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/5+35/21 16/5+70/21 16/10+35/21 16/5+35/42 48/5+35/21 16/15+35/21 16/5+35/63 80/5+35/21 16/25+35/21 16/35+35/21