Add 40/28 and 7/42
1st number: 1 12/28, 2nd number: 7/42
40/28 + 7/42 is 67/42.
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,
40/28 = 40 × 3/28 × 3 = 120/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
7/42 = 7 × 2/42 × 2 = 14/84 - Add the two like fractions:
120/84 + 14/84 = 120 + 14/84 = 134/84 - 134/84 simplified gives 67/42
- So, 40/28 + 7/42 = 67/42
In mixed form: 125/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/28+7/42 40/28+14/42 40/56+7/42 40/28+7/84 40/28+21/42 40/84+7/42 40/28+35/42 40/28+49/42