Add 15/4 and 70/80
1st number: 3 3/4, 2nd number: 70/80
15/4 + 70/80 is 37/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 4 × 20 = 80,
15/4 = 15 × 20/4 × 20 = 300/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
70/80 = 70 × 1/80 × 1 = 70/80 - Add the two like fractions:
300/80 + 70/80 = 300 + 70/80 = 370/80 - 370/80 simplified gives 37/8
- So, 15/4 + 70/80 = 37/8
In mixed form: 45/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/4+70/80 15/8+70/80 45/4+70/80 15/12+70/80 75/4+70/80 15/20+70/80 15/28+70/80