Add 5/40 and 50/42
1st number: 5/40, 2nd number: 1 8/42
5/40 + 50/42 is 221/168.
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,
5/40 = 5 × 21/40 × 21 = 105/840 - Likewise, for the 2nd fraction, since 42 × 20 = 840,
50/42 = 50 × 20/42 × 20 = 1000/840 - Add the two like fractions:
105/840 + 1000/840 = 105 + 1000/840 = 1105/840 - 1105/840 simplified gives 221/168
- So, 5/40 + 50/42 = 221/168
In mixed form: 153/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/40+50/42 5/80+50/42 5/40+50/84 15/40+50/42 25/40+50/42 35/40+50/42