Answers

Add 16/45 and 70/42

1^st number: 16/45, 2^nd number: 1 28/42

16/45 + 70/42 is 91/45.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 42 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 45 × 14 = 630,
   16/45 = 16 × 14/45 × 14 = 224/630
3. Likewise, for the 2nd fraction, since 42 × 15 = 630,
   70/42 = 70 × 15/42 × 15 = 1050/630
4. Add the two like fractions:
   224/630 + 1050/630 = 224 + 1050/630 = 1274/630
5. 1274/630 simplified gives 91/45
6. So, 16/45 + 70/42 = 91/45
   In mixed form: 21/45

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