Add 4/45 and 20/70
4/45 + 20/70 is 118/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
4/45 = 4 × 14/45 × 14 = 56/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
20/70 = 20 × 9/70 × 9 = 180/630 - Add the two like fractions:
56/630 + 180/630 = 56 + 180/630 = 236/630 - 236/630 simplified gives 118/315
- So, 4/45 + 20/70 = 118/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/45+20/70 4/45+40/70 4/90+20/70 12/45+20/70 4/45+60/70 20/45+20/70 28/45+20/70