Answers

Add 70/84 and 7/72

70/84 + 7/72 is 67/72.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 84 × 6 = 504,
   70/84 = 70 × 6/84 × 6 = 420/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   7/72 = 7 × 7/72 × 7 = 49/504
4. Add the two like fractions:
   420/504 + 49/504 = 420 + 49/504 = 469/504
5. 469/504 simplified gives 67/72
6. So, 70/84 + 7/72 = 67/72

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