Answers

Subtract 72/50 from 42/64

1^st number: 42/64, 2^nd number: 1 22/50

42/64 - 72/50 is -627/800.

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,
   72/50 = 72 × 32/50 × 32 = 2304/1600
4. Subtract the two like fractions:
   1050/1600 - 2304/1600 = 1050 - 2304/1600 = -1254/1600
5. After reducing the fraction, the answer is -627/800

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