Add 42/40 and 21/50
1st number: 1 2/40, 2nd number: 21/50
42/40 + 21/50 is 147/100.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 50 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 40 × 5 = 200,
42/40 = 42 × 5/40 × 5 = 210/200 - Likewise, for the 2nd fraction, since 50 × 4 = 200,
21/50 = 21 × 4/50 × 4 = 84/200 - Add the two like fractions:
210/200 + 84/200 = 210 + 84/200 = 294/200 - 294/200 simplified gives 147/100
- So, 42/40 + 21/50 = 147/100
In mixed form: 147/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40+21/50 42/40+42/50 42/80+21/50 42/40+63/50