Answers

Add 72/70 and 42/18

1^st number: 1 2/70, 2^nd number: 2 6/18

72/70 + 42/18 is 353/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 18 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 70 × 9 = 630,
   72/70 = 72 × 9/70 × 9 = 648/630
3. Likewise, for the 2nd fraction, since 18 × 35 = 630,
   42/18 = 42 × 35/18 × 35 = 1470/630
4. Add the two like fractions:
   648/630 + 1470/630 = 648 + 1470/630 = 2118/630
5. 2118/630 simplified gives 353/105
6. So, 72/70 + 42/18 = 353/105
   In mixed form: 338/105

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