Add 54/56 and 72/45
1st number: 54/56, 2nd number: 1 27/45
54/56 + 72/45 is 359/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 45 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
54/56 = 54 × 45/56 × 45 = 2430/2520 - Likewise, for the 2nd fraction, since 45 × 56 = 2520,
72/45 = 72 × 56/45 × 56 = 4032/2520 - Add the two like fractions:
2430/2520 + 4032/2520 = 2430 + 4032/2520 = 6462/2520 - 6462/2520 simplified gives 359/140
- So, 54/56 + 72/45 = 359/140
In mixed form: 279/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/56+72/90