Answers

Add 5/84 and 64/40

1^st number: 5/84, 2^nd number: 1 24/40

5/84 + 64/40 is 697/420.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 84 × 10 = 840,
   5/84 = 5 × 10/84 × 10 = 50/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   64/40 = 64 × 21/40 × 21 = 1344/840
4. Add the two like fractions:
   50/840 + 1344/840 = 50 + 1344/840 = 1394/840
5. 1394/840 simplified gives 697/420
6. So, 5/84 + 64/40 = 697/420
   In mixed form: 1277/420

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