Subtract 72/50 from 42/32
1st number: 1 10/32, 2nd number: 1 22/50
42/32 - 72/50 is -51/400.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 50 is 800
Next, find the equivalent fraction of both fractional numbers with denominator 800 - For the 1st fraction, since 32 × 25 = 800,
42/32 = 42 × 25/32 × 25 = 1050/800 - Likewise, for the 2nd fraction, since 50 × 16 = 800,
72/50 = 72 × 16/50 × 16 = 1152/800 - Subtract the two like fractions:
1050/800 - 1152/800 = 1050 - 1152/800 = -102/800 - After reducing the fraction, the answer is -51/400
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/32-72/50 42/64-72/50 42/96-72/50