Add 72/18 and 18/70
1st number: 4 0/18, 2nd number: 18/70
72/18 + 18/70 is 149/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 18 × 35 = 630,
72/18 = 72 × 35/18 × 35 = 2520/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
18/70 = 18 × 9/70 × 9 = 162/630 - Add the two like fractions:
2520/630 + 162/630 = 2520 + 162/630 = 2682/630 - 2682/630 simplified gives 149/35
- So, 72/18 + 18/70 = 149/35
In mixed form: 49/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/18+36/70 72/36+18/70 72/18+54/70 72/54+18/70 72/18+90/70 72/90+18/70