Add 42/48 and 5/20
42/48 + 5/20 is 9/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 20 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 20 × 12 = 240,
5/20 = 5 × 12/20 × 12 = 60/240 - Add the two like fractions:
210/240 + 60/240 = 210 + 60/240 = 270/240 - 270/240 simplified gives 9/8
- So, 42/48 + 5/20 = 9/8
In mixed form: 11/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/48+5/20 42/48+10/20 42/96+5/20 42/48+5/40 42/48+15/20 42/48+5/60 42/48+25/20 42/48+35/20