Answers

Subtract 45/10 from 84/42

1^st number: 2 0/42, 2^nd number: 4 5/10

84/42 - 45/10 is -5/2.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 10 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 42 × 5 = 210,
   84/42 = 84 × 5/42 × 5 = 420/210
3. Likewise, for the 2nd fraction, since 10 × 21 = 210,
   45/10 = 45 × 21/10 × 21 = 945/210
4. Subtract the two like fractions:
   420/210 - 945/210 = 420 - 945/210 = -525/210
5. After reducing the fraction, the answer is -5/2

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