Subtract 7/54 from 42/48
42/48 - 7/54 is 161/216.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 54 is 432
Next, find the equivalent fraction of both fractional numbers with denominator 432 - For the 1st fraction, since 48 × 9 = 432,
42/48 = 42 × 9/48 × 9 = 378/432 - Likewise, for the 2nd fraction, since 54 × 8 = 432,
7/54 = 7 × 8/54 × 8 = 56/432 - Subtract the two like fractions:
378/432 - 56/432 = 378 - 56/432 = 322/432 - After reducing the fraction, the answer is 161/216
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/48-7/54 42/48-14/54 42/96-7/54 42/48-21/54 42/48-35/54 42/48-49/54