Answers

Add 10/42 and 56/40

1^st number: 10/42, 2^nd number: 1 16/40

10/42 + 56/40 is 172/105.

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,
   10/42 = 10 × 20/42 × 20 = 200/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   56/40 = 56 × 21/40 × 21 = 1176/840
4. Add the two like fractions:
   200/840 + 1176/840 = 200 + 1176/840 = 1376/840
5. 1376/840 simplified gives 172/105
6. So, 10/42 + 56/40 = 172/105
   In mixed form: 167/105

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