Add 45/42 and 9/8
1st number: 1 3/42, 2nd number: 1 1/8
45/42 + 9/8 is 123/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
45/42 = 45 × 4/42 × 4 = 180/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
9/8 = 9 × 21/8 × 21 = 189/168 - Add the two like fractions:
180/168 + 189/168 = 180 + 189/168 = 369/168 - 369/168 simplified gives 123/56
- So, 45/42 + 9/8 = 123/56
In mixed form: 211/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42+9/8 45/42+18/8 45/84+9/8 45/42+9/16 45/42+27/8 45/42+9/24 45/42+45/8 45/42+9/40 45/42+63/8 45/42+9/56