Add 10/42 and 75/72
1st number: 10/42, 2nd number: 1 3/72
10/42 + 75/72 is 215/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 42 × 12 = 504,
10/42 = 10 × 12/42 × 12 = 120/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
75/72 = 75 × 7/72 × 7 = 525/504 - Add the two like fractions:
120/504 + 525/504 = 120 + 525/504 = 645/504 - 645/504 simplified gives 215/168
- So, 10/42 + 75/72 = 215/168
In mixed form: 147/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/42+75/72 10/84+75/72 30/42+75/72 50/42+75/72 70/42+75/72