Subtract 18/64 from 9/42
9/42 - 18/64 is -15/224.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 64 is 1344
Next, find the equivalent fraction of both fractional numbers with denominator 1344 - For the 1st fraction, since 42 × 32 = 1344,
9/42 = 9 × 32/42 × 32 = 288/1344 - Likewise, for the 2nd fraction, since 64 × 21 = 1344,
18/64 = 18 × 21/64 × 21 = 378/1344 - Subtract the two like fractions:
288/1344 - 378/1344 = 288 - 378/1344 = -90/1344 - After reducing the fraction, the answer is -15/224
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