Answers

Add 84/21 and 2/40

1^st number: 4 0/21, 2^nd number: 2/40

84/21 + 2/40 is 81/20.

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,
   84/21 = 84 × 40/21 × 40 = 3360/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   2/40 = 2 × 21/40 × 21 = 42/840
4. Add the two like fractions:
   3360/840 + 42/840 = 3360 + 42/840 = 3402/840
5. 3402/840 simplified gives 81/20
6. So, 84/21 + 2/40 = 81/20
   In mixed form: 41/20

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