Add 30/45 and 18/70
30/45 + 18/70 is 97/105.
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,
30/45 = 30 × 14/45 × 14 = 420/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
18/70 = 18 × 9/70 × 9 = 162/630 - Add the two like fractions:
420/630 + 162/630 = 420 + 162/630 = 582/630 - 582/630 simplified gives 97/105
- So, 30/45 + 18/70 = 97/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/45+18/70 30/45+36/70 30/90+18/70 90/45+18/70 30/45+54/70 30/45+90/70