Add 56/7 and 18/40
1st number: 8 0/7, 2nd number: 18/40
56/7 + 18/40 is 169/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
56/7 = 56 × 40/7 × 40 = 2240/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
18/40 = 18 × 7/40 × 7 = 126/280 - Add the two like fractions:
2240/280 + 126/280 = 2240 + 126/280 = 2366/280 - 2366/280 simplified gives 169/20
- So, 56/7 + 18/40 = 169/20
In mixed form: 89/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/7+36/40 56/14+18/40 56/7+18/80 56/7+54/40 56/21+18/40 56/7+90/40 56/35+18/40 56/49+18/40