Subtract 2/4 from 84/10, Solve 8 4/10

Subtract 2/4 from 84/10

1^st number: 8 4/10, 2^nd number: 2/4

84/10 - 2/4 is 79/10.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 4 is 20

Next, find the equivalent fraction of both fractional numbers with denominator 20
For the 1st fraction, since 10 × 2 = 20,
84/10 = 84 × 2/10 × 2 = 168/20
Likewise, for the 2nd fraction, since 4 × 5 = 20,
2/4 = 2 × 5/4 × 5 = 10/20
Subtract the two like fractions:
168/20 - 10/20 = 168 - 10/20 = 158/20
After reducing the fraction, the answer is 79/10
In mixed form: 79/10

MathStep (Works offline)

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