Add 45/21 and 4/45
1st number: 2 3/21, 2nd number: 4/45
45/21 + 4/45 is 703/315.
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,
4/45 = 4 × 7/45 × 7 = 28/315 - Add the two like fractions:
675/315 + 28/315 = 675 + 28/315 = 703/315 - So, 45/21 + 4/45 = 703/315
In mixed form: 273/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/21+4/45 45/21+8/45 45/42+4/45 45/21+4/90 45/21+12/45 45/63+4/45 45/21+20/45 45/21+28/45