Answers

Subtract 21/64 from 70/50

1^st number: 1 20/50, 2^nd number: 21/64

70/50 - 21/64 is 343/320.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 64 is 1600
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1600
2. For the 1st fraction, since 50 × 32 = 1600,
   70/50 = 70 × 32/50 × 32 = 2240/1600
3. Likewise, for the 2nd fraction, since 64 × 25 = 1600,
   21/64 = 21 × 25/64 × 25 = 525/1600
4. Subtract the two like fractions:
   2240/1600 - 525/1600 = 2240 - 525/1600 = 1715/1600
5. After reducing the fraction, the answer is 343/320
6. In mixed form: 123/320

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