Subtract 54/24 from 15/2, Solve 7 1/2

Subtract 54/24 from 15/2

1^st number: 7 1/2, 2^nd number: 2 6/24

15/2 - 54/24 is 21/4.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 24 is 24

Next, find the equivalent fraction of both fractional numbers with denominator 24
For the 1st fraction, since 2 × 12 = 24,
15/2 = 15 × 12/2 × 12 = 180/24
Likewise, for the 2nd fraction, since 24 × 1 = 24,
54/24 = 54 × 1/24 × 1 = 54/24
Subtract the two like fractions:
180/24 - 54/24 = 180 - 54/24 = 126/24
After reducing the fraction, the answer is 21/4
In mixed form: 51/4

MathStep (Works offline)

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