Add 18/70 and 84/63
1st number: 18/70, 2nd number: 1 21/63
18/70 + 84/63 is 167/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
18/70 = 18 × 9/70 × 9 = 162/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
84/63 = 84 × 10/63 × 10 = 840/630 - Add the two like fractions:
162/630 + 840/630 = 162 + 840/630 = 1002/630 - 1002/630 simplified gives 167/105
- So, 18/70 + 84/63 = 167/105
In mixed form: 162/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/70+84/63 54/70+84/63 90/70+84/63