Subtract 60/8 from 45/15, Solve 3 0/15

Subtract 60/8 from 45/15

1^st number: 3 0/15, 2^nd number: 7 4/8

45/15 - 60/8 is -9/2.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 15 × 8 = 120,
45/15 = 45 × 8/15 × 8 = 360/120
Likewise, for the 2nd fraction, since 8 × 15 = 120,
60/8 = 60 × 15/8 × 15 = 900/120
Subtract the two like fractions:
360/120 - 900/120 = 360 - 900/120 = -540/120
After reducing the fraction, the answer is -9/2

MathStep (Works offline)

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