Add 18/28 and 42/4
1st number: 18/28, 2nd number: 10 2/4
18/28 + 42/4 is 78/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 4 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
18/28 = 18 × 1/28 × 1 = 18/28 - Likewise, for the 2nd fraction, since 4 × 7 = 28,
42/4 = 42 × 7/4 × 7 = 294/28 - Add the two like fractions:
18/28 + 294/28 = 18 + 294/28 = 312/28 - 312/28 simplified gives 78/7
- So, 18/28 + 42/4 = 78/7
In mixed form: 111/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28+42/4 18/28+84/4 18/56+42/4 18/28+42/8 54/28+42/4 18/84+42/4 18/28+42/12 90/28+42/4 18/28+42/20 18/28+42/28