Answers

Subtract 70/27 from 20/63

1^st number: 20/63, 2^nd number: 2 16/27

20/63 - 70/27 is -430/189.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 27 is 189
   
   Next, find the equivalent fraction of both fractional numbers with denominator 189
2. For the 1st fraction, since 63 × 3 = 189,
   20/63 = 20 × 3/63 × 3 = 60/189
3. Likewise, for the 2nd fraction, since 27 × 7 = 189,
   70/27 = 70 × 7/27 × 7 = 490/189
4. Subtract the two like fractions:
   60/189 - 490/189 = 60 - 490/189 = -430/189

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