Add 21/2 and 35/80
1st number: 10 1/2, 2nd number: 35/80
21/2 + 35/80 is 175/16.
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,
21/2 = 21 × 40/2 × 40 = 840/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
35/80 = 35 × 1/80 × 1 = 35/80 - Add the two like fractions:
840/80 + 35/80 = 840 + 35/80 = 875/80 - 875/80 simplified gives 175/16
- So, 21/2 + 35/80 = 175/16
In mixed form: 1015/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2+35/80 21/2+70/80 21/4+35/80 63/2+35/80 21/6+35/80 21/10+35/80 21/14+35/80