Subtract 30/84 from 28/3, Solve 9 1/3

Subtract 30/84 from 28/3

1^st number: 9 1/3, 2^nd number: 30/84

28/3 - 30/84 is 377/42.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 84 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 3 × 28 = 84,
28/3 = 28 × 28/3 × 28 = 784/84
Likewise, for the 2nd fraction, since 84 × 1 = 84,
30/84 = 30 × 1/84 × 1 = 30/84
Subtract the two like fractions:
784/84 - 30/84 = 784 - 30/84 = 754/84
After reducing the fraction, the answer is 377/42
In mixed form: 841/42

MathStep (Works offline)

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