Add 21/4 and 14/70
1st number: 5 1/4, 2nd number: 14/70
21/4 + 14/70 is 109/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 4 × 35 = 140,
21/4 = 21 × 35/4 × 35 = 735/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
14/70 = 14 × 2/70 × 2 = 28/140 - Add the two like fractions:
735/140 + 28/140 = 735 + 28/140 = 763/140 - 763/140 simplified gives 109/20
- So, 21/4 + 14/70 = 109/20
In mixed form: 59/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/4+14/70 21/4+28/70 21/8+14/70 63/4+14/70 21/4+42/70 21/12+14/70 21/20+14/70 21/4+98/70 21/28+14/70