Add 70/18 and 45/8
1st number: 3 16/18, 2nd number: 5 5/8
70/18 + 45/8 is 685/72.
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,
45/8 = 45 × 9/8 × 9 = 405/72 - Add the two like fractions:
280/72 + 405/72 = 280 + 405/72 = 685/72 - So, 70/18 + 45/8 = 685/72
In mixed form: 937/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/18+90/8 70/36+45/8 70/18+45/16 70/54+45/8 70/18+45/24 70/90+45/8 70/18+45/40 70/18+45/56