Answers

Add 48/9 and 72/70

1^st number: 5 3/9, 2^nd number: 1 2/70

48/9 + 72/70 is 668/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 70 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 9 × 70 = 630,
   48/9 = 48 × 70/9 × 70 = 3360/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   72/70 = 72 × 9/70 × 9 = 648/630
4. Add the two like fractions:
   3360/630 + 648/630 = 3360 + 648/630 = 4008/630
5. 4008/630 simplified gives 668/105
6. So, 48/9 + 72/70 = 668/105
   In mixed form: 638/105

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