Add 42/48 and 56/80
42/48 + 56/80 is 63/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 48 × 5 = 240,
42/48 = 42 × 5/48 × 5 = 210/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
56/80 = 56 × 3/80 × 3 = 168/240 - Add the two like fractions:
210/240 + 168/240 = 210 + 168/240 = 378/240 - 378/240 simplified gives 63/40
- So, 42/48 + 56/80 = 63/40
In mixed form: 123/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/48+56/80 42/96+56/80