Add 70/18 and 18/8
1st number: 3 16/18, 2nd number: 2 2/8
70/18 + 18/8 is 221/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
70/18 = 70 × 4/18 × 4 = 280/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
18/8 = 18 × 9/8 × 9 = 162/72 - Add the two like fractions:
280/72 + 162/72 = 280 + 162/72 = 442/72 - 442/72 simplified gives 221/36
- So, 70/18 + 18/8 = 221/36
In mixed form: 65/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/18+36/8 70/36+18/8 70/18+18/16 70/18+54/8 70/54+18/8 70/18+18/24 70/18+90/8 70/90+18/8 70/18+18/40 70/18+18/56