Add 75/42 and 12/20
1st number: 1 33/42, 2nd number: 12/20
75/42 + 12/20 is 167/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
75/42 = 75 × 10/42 × 10 = 750/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
12/20 = 12 × 21/20 × 21 = 252/420 - Add the two like fractions:
750/420 + 252/420 = 750 + 252/420 = 1002/420 - 1002/420 simplified gives 167/70
- So, 75/42 + 12/20 = 167/70
In mixed form: 227/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/42+24/20 75/84+12/20 75/42+12/40 75/42+36/20 75/42+12/60 75/42+60/20 75/42+84/20