Subtract 21/6 from 20/64
1st number: 20/64, 2nd number: 3 3/6
20/64 - 21/6 is -51/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 6 is 192
Next, find the equivalent fraction of both fractional numbers with denominator 192 - For the 1st fraction, since 64 × 3 = 192,
20/64 = 20 × 3/64 × 3 = 60/192 - Likewise, for the 2nd fraction, since 6 × 32 = 192,
21/6 = 21 × 32/6 × 32 = 672/192 - Subtract the two like fractions:
60/192 - 672/192 = 60 - 672/192 = -612/192 - After reducing the fraction, the answer is -51/16
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