Add 90/42 and 7/4
1st number: 2 6/42, 2nd number: 1 3/4
90/42 + 7/4 is 109/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
90/42 = 90 × 2/42 × 2 = 180/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
7/4 = 7 × 21/4 × 21 = 147/84 - Add the two like fractions:
180/84 + 147/84 = 180 + 147/84 = 327/84 - 327/84 simplified gives 109/28
- So, 90/42 + 7/4 = 109/28
In mixed form: 325/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42+14/4 90/84+7/4 90/42+7/8 90/42+21/4 90/42+7/12 90/42+35/4 90/42+7/20 90/42+49/4 90/42+7/28