Add 7/80 and 42/20
1st number: 7/80, 2nd number: 2 2/20
7/80 + 42/20 is 35/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
7/80 = 7 × 1/80 × 1 = 7/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
42/20 = 42 × 4/20 × 4 = 168/80 - Add the two like fractions:
7/80 + 168/80 = 7 + 168/80 = 175/80 - 175/80 simplified gives 35/16
- So, 7/80 + 42/20 = 35/16
In mixed form: 23/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/80+42/20 7/80+84/20 7/80+42/40 21/80+42/20 7/80+42/60 35/80+42/20 49/80+42/20