Answers

Subtract 4/45 from 63/42

1^st number: 1 21/42, 2^nd number: 4/45

63/42 - 4/45 is 127/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 45 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 42 × 15 = 630,
   63/42 = 63 × 15/42 × 15 = 945/630
3. Likewise, for the 2nd fraction, since 45 × 14 = 630,
   4/45 = 4 × 14/45 × 14 = 56/630
4. Subtract the two like fractions:
   945/630 - 56/630 = 945 - 56/630 = 889/630
5. After reducing the fraction, the answer is 127/90
6. In mixed form: 137/90

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