Add 18/7 and 70/18
1st number: 2 4/7, 2nd number: 3 16/18
18/7 + 70/18 is 407/63.
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,
18/7 = 18 × 18/7 × 18 = 324/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
70/18 = 70 × 7/18 × 7 = 490/126 - Add the two like fractions:
324/126 + 490/126 = 324 + 490/126 = 814/126 - 814/126 simplified gives 407/63
- So, 18/7 + 70/18 = 407/63
In mixed form: 629/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/7+70/18 18/14+70/18 18/7+70/36 54/7+70/18 18/21+70/18 18/7+70/54 90/7+70/18 18/35+70/18 18/7+70/90 18/49+70/18