Add 45/7 and 15/18
1st number: 6 3/7, 2nd number: 15/18
45/7 + 15/18 is 305/42.
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,
45/7 = 45 × 18/7 × 18 = 810/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
15/18 = 15 × 7/18 × 7 = 105/126 - Add the two like fractions:
810/126 + 105/126 = 810 + 105/126 = 915/126 - 915/126 simplified gives 305/42
- So, 45/7 + 15/18 = 305/42
In mixed form: 711/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/7+15/18 45/7+30/18 45/14+15/18 45/7+15/36 45/7+45/18 45/21+15/18 45/7+15/54 45/7+75/18 45/35+15/18 45/7+15/90 45/49+15/18