Add 42/2 and 50/12, Solve 21 0/2 + 4 2/12 as a fraction

Add 42/2 and 50/12

1^st number: 21 0/2, 2^nd number: 4 2/12

42/2 + 50/12 is 151/6.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 12 is 12

Next, find the equivalent fraction of both fractional numbers with denominator 12
For the 1st fraction, since 2 × 6 = 12,
42/2 = 42 × 6/2 × 6 = 252/12
Likewise, for the 2nd fraction, since 12 × 1 = 12,
50/12 = 50 × 1/12 × 1 = 50/12
Add the two like fractions:
252/12 + 50/12 = 252 + 50/12 = 302/12
302/12 simplified gives 151/6
So, 42/2 + 50/12 = 151/6
In mixed form: 251/6

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad