Add 45/21 and 16/45
1st number: 2 3/21, 2nd number: 16/45
45/21 + 16/45 is 787/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 21 × 15 = 315,
45/21 = 45 × 15/21 × 15 = 675/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
16/45 = 16 × 7/45 × 7 = 112/315 - Add the two like fractions:
675/315 + 112/315 = 675 + 112/315 = 787/315 - So, 45/21 + 16/45 = 787/315
In mixed form: 2157/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/21+16/45 45/21+32/45 45/42+16/45 45/21+16/90 45/21+48/45 45/63+16/45 45/21+80/45