Subtract 7/32 from 42/45
42/45 - 7/32 is 343/480.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 32 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 45 × 32 = 1440,
42/45 = 42 × 32/45 × 32 = 1344/1440 - Likewise, for the 2nd fraction, since 32 × 45 = 1440,
7/32 = 7 × 45/32 × 45 = 315/1440 - Subtract the two like fractions:
1344/1440 - 315/1440 = 1344 - 315/1440 = 1029/1440 - After reducing the fraction, the answer is 343/480
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/45-7/32 42/45-14/32 42/90-7/32 42/45-7/64 42/45-21/32 42/45-7/96 42/45-35/32 42/45-49/32