Add 7/80 and 7/40
7/80 + 7/40 is 21/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 40 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 40 × 2 = 80,
7/40 = 7 × 2/40 × 2 = 14/80 - Add the two like fractions:
7/80 + 14/80 = 7 + 14/80 = 21/80 - So, 7/80 + 7/40 = 21/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/80+7/40 7/80+14/40 7/80+7/80 21/80+7/40 7/80+21/40 35/80+7/40 7/80+35/40 49/80+7/40 7/80+49/40