Add 42/3 and 45/30, Solve 14 0/3 + 1 15/30 as a fraction

Add 42/3 and 45/30

1^st number: 14 0/3, 2^nd number: 1 15/30

42/3 + 45/30 is 31/2.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 30 is 30

Next, find the equivalent fraction of both fractional numbers with denominator 30
For the 1st fraction, since 3 × 10 = 30,
42/3 = 42 × 10/3 × 10 = 420/30
Likewise, for the 2nd fraction, since 30 × 1 = 30,
45/30 = 45 × 1/30 × 1 = 45/30
Add the two like fractions:
420/30 + 45/30 = 420 + 45/30 = 465/30
465/30 simplified gives 31/2
So, 42/3 + 45/30 = 31/2
In mixed form: 151/2

MathStep (Works offline)

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