Add 56/40 and 90/56
1st number: 1 16/40, 2nd number: 1 34/56
56/40 + 90/56 is 421/140.
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,
56/40 = 56 × 7/40 × 7 = 392/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
90/56 = 90 × 5/56 × 5 = 450/280 - Add the two like fractions:
392/280 + 450/280 = 392 + 450/280 = 842/280 - 842/280 simplified gives 421/140
- So, 56/40 + 90/56 = 421/140
In mixed form: 31/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/80+90/56