Subtract 45/50 from 18/49
18/49 - 45/50 is -261/490.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 50 is 2450
Next, find the equivalent fraction of both fractional numbers with denominator 2450 - For the 1st fraction, since 49 × 50 = 2450,
18/49 = 18 × 50/49 × 50 = 900/2450 - Likewise, for the 2nd fraction, since 50 × 49 = 2450,
45/50 = 45 × 49/50 × 49 = 2205/2450 - Subtract the two like fractions:
900/2450 - 2205/2450 = 900 - 2205/2450 = -1305/2450 - After reducing the fraction, the answer is -261/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/49-45/50 18/49-90/50 18/98-45/50 54/49-45/50 90/49-45/50