Subtract 21/12 from 56/64
1st number: 56/64, 2nd number: 1 9/12
56/64 - 21/12 is -7/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 12 is 192
Next, find the equivalent fraction of both fractional numbers with denominator 192 - For the 1st fraction, since 64 × 3 = 192,
56/64 = 56 × 3/64 × 3 = 168/192 - Likewise, for the 2nd fraction, since 12 × 16 = 192,
21/12 = 21 × 16/12 × 16 = 336/192 - Subtract the two like fractions:
168/192 - 336/192 = 168 - 336/192 = -168/192 - After reducing the fraction, the answer is -7/8
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