Subtract 42/48 from 30/54
30/54 - 42/48 is -23/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 48 is 432
Next, find the equivalent fraction of both fractional numbers with denominator 432 - For the 1st fraction, since 54 × 8 = 432,
30/54 = 30 × 8/54 × 8 = 240/432 - Likewise, for the 2nd fraction, since 48 × 9 = 432,
42/48 = 42 × 9/48 × 9 = 378/432 - Subtract the two like fractions:
240/432 - 378/432 = 240 - 378/432 = -138/432 - After reducing the fraction, the answer is -23/72
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