Add 16/4 and 42/72, Solve 4 0/4 + 42/72 as a fraction

Add 16/4 and 42/72

1^st number: 4 0/4, 2^nd number: 42/72

16/4 + 42/72 is 55/12.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 72 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 4 × 18 = 72,
16/4 = 16 × 18/4 × 18 = 288/72
Likewise, for the 2nd fraction, since 72 × 1 = 72,
42/72 = 42 × 1/72 × 1 = 42/72
Add the two like fractions:
288/72 + 42/72 = 288 + 42/72 = 330/72
330/72 simplified gives 55/12
So, 16/4 + 42/72 = 55/12
In mixed form: 47/12

MathStep (Works offline)

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