Add 20/7 and 18/45
1st number: 2 6/7, 2nd number: 18/45
20/7 + 18/45 is 114/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 7 × 45 = 315,
20/7 = 20 × 45/7 × 45 = 900/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
18/45 = 18 × 7/45 × 7 = 126/315 - Add the two like fractions:
900/315 + 126/315 = 900 + 126/315 = 1026/315 - 1026/315 simplified gives 114/35
- So, 20/7 + 18/45 = 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: 40/7+18/45 20/7+36/45 20/14+18/45 20/7+18/90 60/7+18/45 20/7+54/45 20/21+18/45 20/7+90/45 20/35+18/45 20/49+18/45