Answers

Subtract 20/50 from 42/64

42/64 - 20/50 is 41/160.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 50 is 1600
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1600
2. For the 1st fraction, since 64 × 25 = 1600,
   42/64 = 42 × 25/64 × 25 = 1050/1600
3. Likewise, for the 2nd fraction, since 50 × 32 = 1600,
   20/50 = 20 × 32/50 × 32 = 640/1600
4. Subtract the two like fractions:
   1050/1600 - 640/1600 = 1050 - 640/1600 = 410/1600
5. After reducing the fraction, the answer is 41/160

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