Add 8/40 and 12/56
8/40 + 12/56 is 29/70.
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,
8/40 = 8 × 7/40 × 7 = 56/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
12/56 = 12 × 5/56 × 5 = 60/280 - Add the two like fractions:
56/280 + 60/280 = 56 + 60/280 = 116/280 - 116/280 simplified gives 29/70
- So, 8/40 + 12/56 = 29/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/40+12/56 8/40+24/56 8/80+12/56 24/40+12/56 8/40+36/56 8/40+60/56 56/40+12/56 8/40+84/56