Add 4/40 and 84/56
1st number: 4/40, 2nd number: 1 28/56
4/40 + 84/56 is 8/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
4/40 = 4 × 7/40 × 7 = 28/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
84/56 = 84 × 5/56 × 5 = 420/280 - Add the two like fractions:
28/280 + 420/280 = 28 + 420/280 = 448/280 - 448/280 simplified gives 8/5
- So, 4/40 + 84/56 = 8/5
In mixed form: 13/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/40+84/56 4/80+84/56 12/40+84/56 20/40+84/56 28/40+84/56