Add 7/2 and 30/80
1st number: 3 1/2, 2nd number: 30/80
7/2 + 30/80 is 31/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 2 × 40 = 80,
7/2 = 7 × 40/2 × 40 = 280/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
30/80 = 30 × 1/80 × 1 = 30/80 - Add the two like fractions:
280/80 + 30/80 = 280 + 30/80 = 310/80 - 310/80 simplified gives 31/8
- So, 7/2 + 30/80 = 31/8
In mixed form: 37/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/2+30/80 7/2+60/80 7/4+30/80 21/2+30/80 7/2+90/80 7/6+30/80 35/2+30/80 7/10+30/80 49/2+30/80 7/14+30/80