Add 28/75 and 18/42
28/75 + 18/42 is 421/525.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 42 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 75 × 14 = 1050,
28/75 = 28 × 14/75 × 14 = 392/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
18/42 = 18 × 25/42 × 25 = 450/1050 - Add the two like fractions:
392/1050 + 450/1050 = 392 + 450/1050 = 842/1050 - 842/1050 simplified gives 421/525
- So, 28/75 + 18/42 = 421/525
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/75+18/42 28/75+36/42 28/75+18/84 84/75+18/42 28/75+54/42 28/75+90/42