Add 70/16 and 21/45
1st number: 4 6/16, 2nd number: 21/45
70/16 + 21/45 is 581/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 16 × 45 = 720,
70/16 = 70 × 45/16 × 45 = 3150/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
21/45 = 21 × 16/45 × 16 = 336/720 - Add the two like fractions:
3150/720 + 336/720 = 3150 + 336/720 = 3486/720 - 3486/720 simplified gives 581/120
- So, 70/16 + 21/45 = 581/120
In mixed form: 4101/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/16+42/45 70/32+21/45 70/16+21/90 70/16+63/45 70/48+21/45 70/80+21/45