Add 3/7 and 45/18
1st number: 3/7, 2nd number: 2 9/18
3/7 + 45/18 is 41/14.
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,
3/7 = 3 × 18/7 × 18 = 54/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
45/18 = 45 × 7/18 × 7 = 315/126 - Add the two like fractions:
54/126 + 315/126 = 54 + 315/126 = 369/126 - 369/126 simplified gives 41/14
- So, 3/7 + 45/18 = 41/14
In mixed form: 213/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/7+45/18 3/7+90/18 3/14+45/18 3/7+45/36 9/7+45/18 3/21+45/18 3/7+45/54 15/7+45/18 3/35+45/18 3/7+45/90 21/7+45/18 3/49+45/18