Add 6/7 and 20/45
6/7 + 20/45 is 82/63.
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,
6/7 = 6 × 45/7 × 45 = 270/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
20/45 = 20 × 7/45 × 7 = 140/315 - Add the two like fractions:
270/315 + 140/315 = 270 + 140/315 = 410/315 - 410/315 simplified gives 82/63
- So, 6/7 + 20/45 = 82/63
In mixed form: 119/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/7+20/45 6/7+40/45 6/14+20/45 6/7+20/90 18/7+20/45 6/7+60/45 6/21+20/45 30/7+20/45 6/35+20/45 42/7+20/45 6/49+20/45