Add 84/56 and 8/40
1st number: 1 28/56, 2nd number: 8/40
84/56 + 8/40 is 17/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
84/56 = 84 × 5/56 × 5 = 420/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
8/40 = 8 × 7/40 × 7 = 56/280 - Add the two like fractions:
420/280 + 56/280 = 420 + 56/280 = 476/280 - 476/280 simplified gives 17/10
- So, 84/56 + 8/40 = 17/10
In mixed form: 17/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56+16/40 84/56+8/80 84/56+24/40 84/56+56/40