Subtract 6/90 from 21/64
21/64 - 6/90 is 251/960.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 90 is 2880
Next, find the equivalent fraction of both fractional numbers with denominator 2880 - For the 1st fraction, since 64 × 45 = 2880,
21/64 = 21 × 45/64 × 45 = 945/2880 - Likewise, for the 2nd fraction, since 90 × 32 = 2880,
6/90 = 6 × 32/90 × 32 = 192/2880 - Subtract the two like fractions:
945/2880 - 192/2880 = 945 - 192/2880 = 753/2880 - After reducing the fraction, the answer is 251/960
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