Answers

Add 8/21 and 56/40

1^st number: 8/21, 2^nd number: 1 16/40

8/21 + 56/40 is 187/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 21 × 40 = 840,
   8/21 = 8 × 40/21 × 40 = 320/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   56/40 = 56 × 21/40 × 21 = 1176/840
4. Add the two like fractions:
   320/840 + 1176/840 = 320 + 1176/840 = 1496/840
5. 1496/840 simplified gives 187/105
6. So, 8/21 + 56/40 = 187/105
   In mixed form: 182/105

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