Add 15/2 and 90/5
1st number: 7 1/2, 2nd number: 18 0/5
15/2 + 90/5 is 51/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 5 is 10
Next, find the equivalent fraction of both fractional numbers with denominator 10 - For the 1st fraction, since 2 × 5 = 10,
15/2 = 15 × 5/2 × 5 = 75/10 - Likewise, for the 2nd fraction, since 5 × 2 = 10,
90/5 = 90 × 2/5 × 2 = 180/10 - Add the two like fractions:
75/10 + 180/10 = 75 + 180/10 = 255/10 - 255/10 simplified gives 51/2
- So, 15/2 + 90/5 = 51/2
In mixed form: 251/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/2+90/5 15/4+90/5 15/2+90/10 45/2+90/5 15/6+90/5 15/2+90/15 75/2+90/5 15/10+90/5 15/2+90/25 15/14+90/5 15/2+90/35