Answers

Add 64/42 and 90/54

1^st number: 1 22/42, 2^nd number: 1 36/54

64/42 + 90/54 is 67/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 54 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 42 × 9 = 378,
   64/42 = 64 × 9/42 × 9 = 576/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   90/54 = 90 × 7/54 × 7 = 630/378
4. Add the two like fractions:
   576/378 + 630/378 = 576 + 630/378 = 1206/378
5. 1206/378 simplified gives 67/21
6. So, 64/42 + 90/54 = 67/21
   In mixed form: 34/21

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