Add 75/42 and 3/18
1st number: 1 33/42, 2nd number: 3/18
75/42 + 3/18 is 41/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
75/42 = 75 × 3/42 × 3 = 225/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
3/18 = 3 × 7/18 × 7 = 21/126 - Add the two like fractions:
225/126 + 21/126 = 225 + 21/126 = 246/126 - 246/126 simplified gives 41/21
- So, 75/42 + 3/18 = 41/21
In mixed form: 120/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/42+6/18 75/84+3/18 75/42+3/36 75/42+9/18 75/42+3/54 75/42+15/18 75/42+3/90 75/42+21/18