Answers

Add 90/42 and 42/90

1^st number: 2 6/42, 2^nd number: 42/90

90/42 + 42/90 is 274/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 90 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 90 × 7 = 630,
   42/90 = 42 × 7/90 × 7 = 294/630
4. Add the two like fractions:
   1350/630 + 294/630 = 1350 + 294/630 = 1644/630
5. 1644/630 simplified gives 274/105
6. So, 90/42 + 42/90 = 274/105
   In mixed form: 264/105

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