Answers

Add 45/40 and 50/42

1^st number: 1 5/40, 2^nd number: 1 8/42

45/40 + 50/42 is 389/168.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 42 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 40 × 21 = 840,
   45/40 = 45 × 21/40 × 21 = 945/840
3. Likewise, for the 2nd fraction, since 42 × 20 = 840,
   50/42 = 50 × 20/42 × 20 = 1000/840
4. Add the two like fractions:
   945/840 + 1000/840 = 945 + 1000/840 = 1945/840
5. 1945/840 simplified gives 389/168
6. So, 45/40 + 50/42 = 389/168
   In mixed form: 253/168

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