Add 12/3 and 42/20, Solve 4 0/3 + 2 2/20 as a fraction

Add 12/3 and 42/20

1^st number: 4 0/3, 2^nd number: 2 2/20

12/3 + 42/20 is 61/10.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 20 is 60

Next, find the equivalent fraction of both fractional numbers with denominator 60
For the 1st fraction, since 3 × 20 = 60,
12/3 = 12 × 20/3 × 20 = 240/60
Likewise, for the 2nd fraction, since 20 × 3 = 60,
42/20 = 42 × 3/20 × 3 = 126/60
Add the two like fractions:
240/60 + 126/60 = 240 + 126/60 = 366/60
366/60 simplified gives 61/10
So, 12/3 + 42/20 = 61/10
In mixed form: 61/10

MathStep (Works offline)

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