Subtract 18/9 from 18/50, Solve 18/50

Subtract 18/9 from 18/50

1^st number: 18/50, 2^nd number: 2 0/9

18/50 - 18/9 is -41/25.

Find the least common denominator or LCM of the two denominators:
LCM of 50 and 9 is 450

Next, find the equivalent fraction of both fractional numbers with denominator 450
For the 1st fraction, since 50 × 9 = 450,
18/50 = 18 × 9/50 × 9 = 162/450
Likewise, for the 2nd fraction, since 9 × 50 = 450,
18/9 = 18 × 50/9 × 50 = 900/450
Subtract the two like fractions:
162/450 - 900/450 = 162 - 900/450 = -738/450
After reducing the fraction, the answer is -41/25

MathStep (Works offline)

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