Answers

Add 42/90 and 84/27

1^st number: 42/90, 2^nd number: 3 3/27

42/90 + 84/27 is 161/45.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 27 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 90 × 3 = 270,
   42/90 = 42 × 3/90 × 3 = 126/270
3. Likewise, for the 2nd fraction, since 27 × 10 = 270,
   84/27 = 84 × 10/27 × 10 = 840/270
4. Add the two like fractions:
   126/270 + 840/270 = 126 + 840/270 = 966/270
5. 966/270 simplified gives 161/45
6. So, 42/90 + 84/27 = 161/45
   In mixed form: 326/45

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