Answers

Add 45/42 and 18/40

1^st number: 1 3/42, 2^nd number: 18/40

45/42 + 18/40 is 213/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 42 × 20 = 840,
   45/42 = 45 × 20/42 × 20 = 900/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   18/40 = 18 × 21/40 × 21 = 378/840
4. Add the two like fractions:
   900/840 + 378/840 = 900 + 378/840 = 1278/840
5. 1278/840 simplified gives 213/140
6. So, 45/42 + 18/40 = 213/140
   In mixed form: 173/140

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