Add 4/15 and 54/42
1st number: 4/15, 2nd number: 1 12/42
4/15 + 54/42 is 163/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
4/15 = 4 × 14/15 × 14 = 56/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
54/42 = 54 × 5/42 × 5 = 270/210 - Add the two like fractions:
56/210 + 270/210 = 56 + 270/210 = 326/210 - 326/210 simplified gives 163/105
- So, 4/15 + 54/42 = 163/105
In mixed form: 158/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/15+54/42 4/30+54/42 4/15+54/84 12/15+54/42 4/45+54/42 20/15+54/42 4/75+54/42 28/15+54/42