Add 54/42 and 50/15
1st number: 1 12/42, 2nd number: 3 5/15
54/42 + 50/15 is 97/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
54/42 = 54 × 5/42 × 5 = 270/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
50/15 = 50 × 14/15 × 14 = 700/210 - Add the two like fractions:
270/210 + 700/210 = 270 + 700/210 = 970/210 - 970/210 simplified gives 97/21
- So, 54/42 + 50/15 = 97/21
In mixed form: 413/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/84+50/15 54/42+50/30 54/42+50/45 54/42+50/75