Add 7/28 and 1/80
7/28 + 1/80 is 21/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 28 × 20 = 560,
7/28 = 7 × 20/28 × 20 = 140/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
1/80 = 1 × 7/80 × 7 = 7/560 - Add the two like fractions:
140/560 + 7/560 = 140 + 7/560 = 147/560 - 147/560 simplified gives 21/80
- So, 7/28 + 1/80 = 21/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/28+1/80 7/28+2/80 7/56+1/80 21/28+1/80 7/28+3/80 7/84+1/80 35/28+1/80 7/28+5/80 49/28+1/80 7/28+7/80