Subtract 45/10 from 30/2, Solve 15 0/2

Subtract 45/10 from 30/2

1^st number: 15 0/2, 2^nd number: 4 5/10

30/2 - 45/10 is 21/2.

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,
30/2 = 30 × 5/2 × 5 = 150/10
Likewise, for the 2nd fraction, since 10 × 1 = 10,
45/10 = 45 × 1/10 × 1 = 45/10
Subtract the two like fractions:
150/10 - 45/10 = 150 - 45/10 = 105/10
After reducing the fraction, the answer is 21/2
In mixed form: 101/2

MathStep (Works offline)

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