Add 28/42 and 30/50
28/42 + 30/50 is 19/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 50 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 42 × 25 = 1050,
28/42 = 28 × 25/42 × 25 = 700/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
30/50 = 30 × 21/50 × 21 = 630/1050 - Add the two like fractions:
700/1050 + 630/1050 = 700 + 630/1050 = 1330/1050 - 1330/1050 simplified gives 19/15
- So, 28/42 + 30/50 = 19/15
In mixed form: 14/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42+30/50 28/42+60/50 28/84+30/50 84/42+30/50 28/42+90/50