Subtract 21/64 from 3/10
3/10 - 21/64 is -9/320.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 64 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 10 × 32 = 320,
3/10 = 3 × 32/10 × 32 = 96/320 - Likewise, for the 2nd fraction, since 64 × 5 = 320,
21/64 = 21 × 5/64 × 5 = 105/320 - Subtract the two like fractions:
96/320 - 105/320 = 96 - 105/320 = -9/320
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