Answers

Add 72/64 and 84/20

1^st number: 1 8/64, 2^nd number: 4 4/20

72/64 + 84/20 is 213/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 20 is 320
   
   Next, find the equivalent fraction of both fractional numbers with denominator 320
2. For the 1st fraction, since 64 × 5 = 320,
   72/64 = 72 × 5/64 × 5 = 360/320
3. Likewise, for the 2nd fraction, since 20 × 16 = 320,
   84/20 = 84 × 16/20 × 16 = 1344/320
4. Add the two like fractions:
   360/320 + 1344/320 = 360 + 1344/320 = 1704/320
5. 1704/320 simplified gives 213/40
6. So, 72/64 + 84/20 = 213/40
   In mixed form: 513/40

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