Add 9/28 and 18/42
9/28 + 18/42 is 3/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
9/28 = 9 × 3/28 × 3 = 27/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
18/42 = 18 × 2/42 × 2 = 36/84 - Add the two like fractions:
27/84 + 36/84 = 27 + 36/84 = 63/84 - 63/84 simplified gives 3/4
- So, 9/28 + 18/42 = 3/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/28+18/42 9/28+36/42 9/56+18/42 9/28+18/84 27/28+18/42 9/28+54/42 9/84+18/42 45/28+18/42 9/28+90/42 63/28+18/42