Subtract 12/10 from 84/2, Solve 42 0/2

Subtract 12/10 from 84/2

1^st number: 42 0/2, 2^nd number: 1 2/10

84/2 - 12/10 is 204/5.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 10 is 10

Next, find the equivalent fraction of both fractional numbers with denominator 10
For the 1st fraction, since 2 × 5 = 10,
84/2 = 84 × 5/2 × 5 = 420/10
Likewise, for the 2nd fraction, since 10 × 1 = 10,
12/10 = 12 × 1/10 × 1 = 12/10
Subtract the two like fractions:
420/10 - 12/10 = 420 - 12/10 = 408/10
After reducing the fraction, the answer is 204/5
In mixed form: 404/5

MathStep (Works offline)

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