Add 45/56 and 30/18
1st number: 45/56, 2nd number: 1 12/18
45/56 + 30/18 is 415/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 18 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
45/56 = 45 × 9/56 × 9 = 405/504 - Likewise, for the 2nd fraction, since 18 × 28 = 504,
30/18 = 30 × 28/18 × 28 = 840/504 - Add the two like fractions:
405/504 + 840/504 = 405 + 840/504 = 1245/504 - 1245/504 simplified gives 415/168
- So, 45/56 + 30/18 = 415/168
In mixed form: 279/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/56+30/18 45/56+60/18 45/56+30/36 45/56+90/18 45/56+30/54 45/56+30/90