Add 81/56 and 8/70
1st number: 1 25/56, 2nd number: 8/70
81/56 + 8/70 is 437/280.
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,
81/56 = 81 × 5/56 × 5 = 405/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
8/70 = 8 × 4/70 × 4 = 32/280 - Add the two like fractions:
405/280 + 32/280 = 405 + 32/280 = 437/280 - So, 81/56 + 8/70 = 437/280
In mixed form: 1157/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/56+16/70 81/56+24/70 81/56+40/70 81/56+56/70