Add 18/42 and 4/5
18/42 + 4/5 is 43/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 5 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
18/42 = 18 × 5/42 × 5 = 90/210 - Likewise, for the 2nd fraction, since 5 × 42 = 210,
4/5 = 4 × 42/5 × 42 = 168/210 - Add the two like fractions:
90/210 + 168/210 = 90 + 168/210 = 258/210 - 258/210 simplified gives 43/35
- So, 18/42 + 4/5 = 43/35
In mixed form: 18/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/42+4/5 18/42+8/5 18/84+4/5 18/42+4/10 54/42+4/5 18/42+12/5 18/42+4/15 90/42+4/5 18/42+20/5 18/42+4/25 18/42+28/5 18/42+4/35