Add 15/10 and 70/90
1st number: 1 5/10, 2nd number: 70/90
15/10 + 70/90 is 41/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
15/10 = 15 × 9/10 × 9 = 135/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
70/90 = 70 × 1/90 × 1 = 70/90 - Add the two like fractions:
135/90 + 70/90 = 135 + 70/90 = 205/90 - 205/90 simplified gives 41/18
- So, 15/10 + 70/90 = 41/18
In mixed form: 25/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/10+70/90 15/20+70/90 45/10+70/90 15/30+70/90 75/10+70/90 15/50+70/90 15/70+70/90