Add 18/45 and 20/7
1st number: 18/45, 2nd number: 2 6/7
18/45 + 20/7 is 114/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 7 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
18/45 = 18 × 7/45 × 7 = 126/315 - Likewise, for the 2nd fraction, since 7 × 45 = 315,
20/7 = 20 × 45/7 × 45 = 900/315 - Add the two like fractions:
126/315 + 900/315 = 126 + 900/315 = 1026/315 - 1026/315 simplified gives 114/35
- So, 18/45 + 20/7 = 114/35
In mixed form: 39/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/45+20/7 18/45+40/7 18/90+20/7 18/45+20/14 54/45+20/7 18/45+60/7 18/45+20/21 90/45+20/7 18/45+20/35 18/45+20/49