Add 40/21 and 5/40
1st number: 1 19/21, 2nd number: 5/40
40/21 + 5/40 is 341/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 21 × 40 = 840,
40/21 = 40 × 40/21 × 40 = 1600/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
5/40 = 5 × 21/40 × 21 = 105/840 - Add the two like fractions:
1600/840 + 105/840 = 1600 + 105/840 = 1705/840 - 1705/840 simplified gives 341/168
- So, 40/21 + 5/40 = 341/168
In mixed form: 25/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/21+5/40 40/21+10/40 40/42+5/40 40/21+5/80 40/21+15/40 40/63+5/40 40/21+25/40 40/21+35/40