Add 50/42 and 70/72
1st number: 1 8/42, 2nd number: 70/72
50/42 + 70/72 is 545/252.
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,
50/42 = 50 × 12/42 × 12 = 600/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
70/72 = 70 × 7/72 × 7 = 490/504 - Add the two like fractions:
600/504 + 490/504 = 600 + 490/504 = 1090/504 - 1090/504 simplified gives 545/252
- So, 50/42 + 70/72 = 545/252
In mixed form: 241/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/84+70/72