Add 42/48 and 16/20
42/48 + 16/20 is 67/40.
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,
16/20 = 16 × 12/20 × 12 = 192/240 - Add the two like fractions:
210/240 + 192/240 = 210 + 192/240 = 402/240 - 402/240 simplified gives 67/40
- So, 42/48 + 16/20 = 67/40
In mixed form: 127/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/48+16/20 42/48+32/20 42/96+16/20 42/48+16/40 42/48+48/20 42/48+16/60 42/48+80/20