Add 72/56 and 54/90
1st number: 1 16/56, 2nd number: 54/90
72/56 + 54/90 is 66/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 90 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
72/56 = 72 × 45/56 × 45 = 3240/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
54/90 = 54 × 28/90 × 28 = 1512/2520 - Add the two like fractions:
3240/2520 + 1512/2520 = 3240 + 1512/2520 = 4752/2520 - 4752/2520 simplified gives 66/35
- So, 72/56 + 54/90 = 66/35
In mixed form: 131/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: