Subtract 21/64 from 42/18
1st number: 2 6/18, 2nd number: 21/64
42/18 - 21/64 is 385/192.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 64 is 576
Next, find the equivalent fraction of both fractional numbers with denominator 576 - For the 1st fraction, since 18 × 32 = 576,
42/18 = 42 × 32/18 × 32 = 1344/576 - Likewise, for the 2nd fraction, since 64 × 9 = 576,
21/64 = 21 × 9/64 × 9 = 189/576 - Subtract the two like fractions:
1344/576 - 189/576 = 1344 - 189/576 = 1155/576 - After reducing the fraction, the answer is 385/192
- In mixed form: 21/192
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