Answers

Add 9/42 and 54/40

1^st number: 9/42, 2^nd number: 1 14/40

9/42 + 54/40 is 219/140.

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,
   9/42 = 9 × 20/42 × 20 = 180/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   54/40 = 54 × 21/40 × 21 = 1134/840
4. Add the two like fractions:
   180/840 + 1134/840 = 180 + 1134/840 = 1314/840
5. 1314/840 simplified gives 219/140
6. So, 9/42 + 54/40 = 219/140
   In mixed form: 179/140

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