Answers

Subtract 18/72 from 90/64

1^st number: 1 26/64, 2^nd number: 18/72

90/64 - 18/72 is 37/32.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 72 is 576
   
   Next, find the equivalent fraction of both fractional numbers with denominator 576
2. For the 1st fraction, since 64 × 9 = 576,
   90/64 = 90 × 9/64 × 9 = 810/576
3. Likewise, for the 2nd fraction, since 72 × 8 = 576,
   18/72 = 18 × 8/72 × 8 = 144/576
4. Subtract the two like fractions:
   810/576 - 144/576 = 810 - 144/576 = 666/576
5. After reducing the fraction, the answer is 37/32
6. In mixed form: 15/32

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