Add 45/18 and 4/7
1st number: 2 9/18, 2nd number: 4/7
45/18 + 4/7 is 43/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
45/18 = 45 × 7/18 × 7 = 315/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
4/7 = 4 × 18/7 × 18 = 72/126 - Add the two like fractions:
315/126 + 72/126 = 315 + 72/126 = 387/126 - 387/126 simplified gives 43/14
- So, 45/18 + 4/7 = 43/14
In mixed form: 31/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/18+4/7 45/18+8/7 45/36+4/7 45/18+4/14 45/18+12/7 45/54+4/7 45/18+4/21 45/18+20/7 45/90+4/7 45/18+4/35 45/18+28/7 45/18+4/49