Add 3/45 and 20/7
1st number: 3/45, 2nd number: 2 6/7
3/45 + 20/7 is 307/105.
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,
3/45 = 3 × 7/45 × 7 = 21/315 - Likewise, for the 2nd fraction, since 7 × 45 = 315,
20/7 = 20 × 45/7 × 45 = 900/315 - Add the two like fractions:
21/315 + 900/315 = 21 + 900/315 = 921/315 - 921/315 simplified gives 307/105
- So, 3/45 + 20/7 = 307/105
In mixed form: 297/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/45+20/7 3/45+40/7 3/90+20/7 3/45+20/14 9/45+20/7 3/45+60/7 3/45+20/21 15/45+20/7 3/45+20/35 21/45+20/7 3/45+20/49