Subtract 75/50 from 3/18, Solve 3/18

Subtract 75/50 from 3/18

1^st number: 3/18, 2^nd number: 1 25/50

3/18 - 75/50 is -4/3.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 50 is 450

Next, find the equivalent fraction of both fractional numbers with denominator 450
For the 1st fraction, since 18 × 25 = 450,
3/18 = 3 × 25/18 × 25 = 75/450
Likewise, for the 2nd fraction, since 50 × 9 = 450,
75/50 = 75 × 9/50 × 9 = 675/450
Subtract the two like fractions:
75/450 - 675/450 = 75 - 675/450 = -600/450
After reducing the fraction, the answer is -4/3

MathStep (Works offline)

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