Add 42/56 and 18/5
1st number: 42/56, 2nd number: 3 3/5
42/56 + 18/5 is 87/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 5 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
42/56 = 42 × 5/56 × 5 = 210/280 - Likewise, for the 2nd fraction, since 5 × 56 = 280,
18/5 = 18 × 56/5 × 56 = 1008/280 - Add the two like fractions:
210/280 + 1008/280 = 210 + 1008/280 = 1218/280 - 1218/280 simplified gives 87/20
- So, 42/56 + 18/5 = 87/20
In mixed form: 47/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56+18/5 42/56+36/5 42/56+18/10 42/56+54/5 42/56+18/15 42/56+90/5 42/56+18/25 42/56+18/35