Add 25/28 and 9/42
25/28 + 9/42 is 31/28.
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,
25/28 = 25 × 3/28 × 3 = 75/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
9/42 = 9 × 2/42 × 2 = 18/84 - Add the two like fractions:
75/84 + 18/84 = 75 + 18/84 = 93/84 - 93/84 simplified gives 31/28
- So, 25/28 + 9/42 = 31/28
In mixed form: 13/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/28+9/42 25/28+18/42 25/56+9/42 25/28+9/84 75/28+9/42 25/28+27/42 25/84+9/42 25/28+45/42 25/28+63/42