Add 70/18 and 1/15
1st number: 3 16/18, 2nd number: 1/15
70/18 + 1/15 is 178/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
70/18 = 70 × 5/18 × 5 = 350/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
1/15 = 1 × 6/15 × 6 = 6/90 - Add the two like fractions:
350/90 + 6/90 = 350 + 6/90 = 356/90 - 356/90 simplified gives 178/45
- So, 70/18 + 1/15 = 178/45
In mixed form: 343/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/18+2/15 70/36+1/15 70/18+1/30 70/18+3/15 70/54+1/15 70/18+1/45 70/18+5/15 70/90+1/15 70/18+1/75 70/18+7/15