Add 27/42 and 5/40
27/42 + 5/40 is 43/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 42 × 20 = 840,
27/42 = 27 × 20/42 × 20 = 540/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
5/40 = 5 × 21/40 × 21 = 105/840 - Add the two like fractions:
540/840 + 105/840 = 540 + 105/840 = 645/840 - 645/840 simplified gives 43/56
- So, 27/42 + 5/40 = 43/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42+5/40 27/42+10/40 27/84+5/40 27/42+5/80 81/42+5/40 27/42+15/40 27/42+25/40 27/42+35/40