Add 56/40 and 20/42
1st number: 1 16/40, 2nd number: 20/42
56/40 + 20/42 is 197/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 42 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
56/40 = 56 × 21/40 × 21 = 1176/840 - Likewise, for the 2nd fraction, since 42 × 20 = 840,
20/42 = 20 × 20/42 × 20 = 400/840 - Add the two like fractions:
1176/840 + 400/840 = 1176 + 400/840 = 1576/840 - 1576/840 simplified gives 197/105
- So, 56/40 + 20/42 = 197/105
In mixed form: 192/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/40+40/42 56/80+20/42 56/40+20/84 56/40+60/42