Add 7/28 and 40/50
7/28 + 40/50 is 21/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 50 is 700
Next, find the equivalent fraction of both fractional numbers with denominator 700 - For the 1st fraction, since 28 × 25 = 700,
7/28 = 7 × 25/28 × 25 = 175/700 - Likewise, for the 2nd fraction, since 50 × 14 = 700,
40/50 = 40 × 14/50 × 14 = 560/700 - Add the two like fractions:
175/700 + 560/700 = 175 + 560/700 = 735/700 - 735/700 simplified gives 21/20
- So, 7/28 + 40/50 = 21/20
In mixed form: 11/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/28+40/50 7/28+80/50 7/56+40/50 21/28+40/50 7/84+40/50 35/28+40/50 49/28+40/50