Subtract 9/42 from 30/48
30/48 - 9/42 is 23/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 42 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 48 × 7 = 336,
30/48 = 30 × 7/48 × 7 = 210/336 - Likewise, for the 2nd fraction, since 42 × 8 = 336,
9/42 = 9 × 8/42 × 8 = 72/336 - Subtract the two like fractions:
210/336 - 72/336 = 210 - 72/336 = 138/336 - After reducing the fraction, the answer is 23/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/48-9/42 30/48-18/42 30/96-9/42 30/48-9/84 90/48-9/42 30/48-27/42 30/48-45/42 30/48-63/42