Answers

Add 80/40 and 21/64

1^st number: 2 0/40, 2^nd number: 21/64

80/40 + 21/64 is 149/64.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 64 is 320
   
   Next, find the equivalent fraction of both fractional numbers with denominator 320
2. For the 1st fraction, since 40 × 8 = 320,
   80/40 = 80 × 8/40 × 8 = 640/320
3. Likewise, for the 2nd fraction, since 64 × 5 = 320,
   21/64 = 21 × 5/64 × 5 = 105/320
4. Add the two like fractions:
   640/320 + 105/320 = 640 + 105/320 = 745/320
5. 745/320 simplified gives 149/64
6. So, 80/40 + 21/64 = 149/64
   In mixed form: 221/64

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