Subtract 30/48 from 8/42
8/42 - 30/48 is -73/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 42 × 8 = 336,
8/42 = 8 × 8/42 × 8 = 64/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
30/48 = 30 × 7/48 × 7 = 210/336 - Subtract the two like fractions:
64/336 - 210/336 = 64 - 210/336 = -146/336 - After reducing the fraction, the answer is -73/168
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