Add 54/56 and 81/70
1st number: 54/56, 2nd number: 1 11/70
54/56 + 81/70 is 297/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
54/56 = 54 × 5/56 × 5 = 270/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
81/70 = 81 × 4/70 × 4 = 324/280 - Add the two like fractions:
270/280 + 324/280 = 270 + 324/280 = 594/280 - 594/280 simplified gives 297/140
- So, 54/56 + 81/70 = 297/140
In mixed form: 217/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: