Add 4/7 and 3/18
4/7 + 3/18 is 31/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 7 × 18 = 126,
4/7 = 4 × 18/7 × 18 = 72/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
3/18 = 3 × 7/18 × 7 = 21/126 - Add the two like fractions:
72/126 + 21/126 = 72 + 21/126 = 93/126 - 93/126 simplified gives 31/42
- So, 4/7 + 3/18 = 31/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/7+3/18 4/7+6/18 4/14+3/18 4/7+3/36 12/7+3/18 4/7+9/18 4/21+3/18 4/7+3/54 20/7+3/18 4/7+15/18 4/35+3/18 4/7+3/90 28/7+3/18 4/7+21/18 4/49+3/18