Subtract 21/42 from 49/3, Solve 16 1/3

Subtract 21/42 from 49/3

1^st number: 16 1/3, 2^nd number: 21/42

49/3 - 21/42 is 95/6.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 42 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 3 × 14 = 42,
49/3 = 49 × 14/3 × 14 = 686/42
Likewise, for the 2nd fraction, since 42 × 1 = 42,
21/42 = 21 × 1/42 × 1 = 21/42
Subtract the two like fractions:
686/42 - 21/42 = 686 - 21/42 = 665/42
After reducing the fraction, the answer is 95/6
In mixed form: 155/6

MathStep (Works offline)

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