Answers

Add 72/84 and 20/64

72/84 + 20/64 is 131/112.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 64 is 1344
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1344
2. For the 1st fraction, since 84 × 16 = 1344,
   72/84 = 72 × 16/84 × 16 = 1152/1344
3. Likewise, for the 2nd fraction, since 64 × 21 = 1344,
   20/64 = 20 × 21/64 × 21 = 420/1344
4. Add the two like fractions:
   1152/1344 + 420/1344 = 1152 + 420/1344 = 1572/1344
5. 1572/1344 simplified gives 131/112
6. So, 72/84 + 20/64 = 131/112
   In mixed form: 119/112

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