Add 4/28 and 42/40
1st number: 4/28, 2nd number: 1 2/40
4/28 + 42/40 is 167/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
4/28 = 4 × 10/28 × 10 = 40/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
42/40 = 42 × 7/40 × 7 = 294/280 - Add the two like fractions:
40/280 + 294/280 = 40 + 294/280 = 334/280 - 334/280 simplified gives 167/140
- So, 4/28 + 42/40 = 167/140
In mixed form: 127/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/28+42/40 4/28+84/40 4/56+42/40 4/28+42/80 12/28+42/40 4/84+42/40 20/28+42/40