Answers

Subtract 90/64 from 70/90

1^st number: 70/90, 2^nd number: 1 26/64

70/90 - 90/64 is -181/288.

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,
   90/64 = 90 × 45/64 × 45 = 4050/2880
4. Subtract the two like fractions:
   2240/2880 - 4050/2880 = 2240 - 4050/2880 = -1810/2880
5. After reducing the fraction, the answer is -181/288

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