Subtract 8/84 from 90/16, Solve 5 10/16

Subtract 8/84 from 90/16

1^st number: 5 10/16, 2^nd number: 8/84

90/16 - 8/84 is 929/168.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 84 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 16 × 21 = 336,
90/16 = 90 × 21/16 × 21 = 1890/336
Likewise, for the 2nd fraction, since 84 × 4 = 336,
8/84 = 8 × 4/84 × 4 = 32/336
Subtract the two like fractions:
1890/336 - 32/336 = 1890 - 32/336 = 1858/336
After reducing the fraction, the answer is 929/168
In mixed form: 589/168

MathStep (Works offline)

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