Answers

Subtract 20/80 from 42/64

42/64 - 20/80 is 13/32.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 80 is 320
   
   Next, find the equivalent fraction of both fractional numbers with denominator 320
2. For the 1st fraction, since 64 × 5 = 320,
   42/64 = 42 × 5/64 × 5 = 210/320
3. Likewise, for the 2nd fraction, since 80 × 4 = 320,
   20/80 = 20 × 4/80 × 4 = 80/320
4. Subtract the two like fractions:
   210/320 - 80/320 = 210 - 80/320 = 130/320
5. After reducing the fraction, the answer is 13/32

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