Answers

Subtract 3/64 from 70/90

70/90 - 3/64 is 421/576.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 64 is 2880
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2880
2. For the 1st fraction, since 90 × 32 = 2880,
   70/90 = 70 × 32/90 × 32 = 2240/2880
3. Likewise, for the 2nd fraction, since 64 × 45 = 2880,
   3/64 = 3 × 45/64 × 45 = 135/2880
4. Subtract the two like fractions:
   2240/2880 - 135/2880 = 2240 - 135/2880 = 2105/2880
5. After reducing the fraction, the answer is 421/576

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