Answers

Add 28/42 and 56/40

1^st number: 28/42, 2^nd number: 1 16/40

28/42 + 56/40 is 31/15.

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,
   28/42 = 28 × 20/42 × 20 = 560/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   56/40 = 56 × 21/40 × 21 = 1176/840
4. Add the two like fractions:
   560/840 + 1176/840 = 560 + 1176/840 = 1736/840
5. 1736/840 simplified gives 31/15
6. So, 28/42 + 56/40 = 31/15
   In mixed form: 21/15

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