Subtract 18/48 from 4/42
4/42 - 18/48 is -47/168.
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,
4/42 = 4 × 8/42 × 8 = 32/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
18/48 = 18 × 7/48 × 7 = 126/336 - Subtract the two like fractions:
32/336 - 126/336 = 32 - 126/336 = -94/336 - After reducing the fraction, the answer is -47/168
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