Add 70/15 and 1/90
1st number: 4 10/15, 2nd number: 1/90
70/15 + 1/90 is 421/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
70/15 = 70 × 6/15 × 6 = 420/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
1/90 = 1 × 1/90 × 1 = 1/90 - Add the two like fractions:
420/90 + 1/90 = 420 + 1/90 = 421/90 - So, 70/15 + 1/90 = 421/90
In mixed form: 461/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/15+2/90 70/30+1/90 70/15+3/90 70/45+1/90 70/15+5/90 70/75+1/90 70/15+7/90