Answers

Add 90/42 and 40/45

1^st number: 2 6/42, 2^nd number: 40/45

90/42 + 40/45 is 191/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 45 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 42 × 15 = 630,
   90/42 = 90 × 15/42 × 15 = 1350/630
3. Likewise, for the 2nd fraction, since 45 × 14 = 630,
   40/45 = 40 × 14/45 × 14 = 560/630
4. Add the two like fractions:
   1350/630 + 560/630 = 1350 + 560/630 = 1910/630
5. 1910/630 simplified gives 191/63
6. So, 90/42 + 40/45 = 191/63
   In mixed form: 32/63

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