Add 72/18 and 84/70
1st number: 4 0/18, 2nd number: 1 14/70
72/18 + 84/70 is 26/5.
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,
84/70 = 84 × 9/70 × 9 = 756/630 - Add the two like fractions:
2520/630 + 756/630 = 2520 + 756/630 = 3276/630 - 3276/630 simplified gives 26/5
- So, 72/18 + 84/70 = 26/5
In mixed form: 51/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/36+84/70 72/54+84/70 72/90+84/70