Answers

Add 28/45 and 90/42

1^st number: 28/45, 2^nd number: 2 6/42

28/45 + 90/42 is 871/315.

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,
   28/45 = 28 × 14/45 × 14 = 392/630
3. Likewise, for the 2nd fraction, since 42 × 15 = 630,
   90/42 = 90 × 15/42 × 15 = 1350/630
4. Add the two like fractions:
   392/630 + 1350/630 = 392 + 1350/630 = 1742/630
5. 1742/630 simplified gives 871/315
6. So, 28/45 + 90/42 = 871/315
   In mixed form: 2241/315

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