Add 5/42 and 45/28
1st number: 5/42, 2nd number: 1 17/28
5/42 + 45/28 is 145/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
5/42 = 5 × 2/42 × 2 = 10/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
45/28 = 45 × 3/28 × 3 = 135/84 - Add the two like fractions:
10/84 + 135/84 = 10 + 135/84 = 145/84 - So, 5/42 + 45/28 = 145/84
In mixed form: 161/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/42+45/28 5/42+90/28 5/84+45/28 5/42+45/56 15/42+45/28 5/42+45/84 25/42+45/28 35/42+45/28