Answers

Add 42/21 and 90/6

1^st number: 2 0/21, 2^nd number: 15 0/6

42/21 + 90/6 is 17/1.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 6 is 42
   
   Next, find the equivalent fraction of both fractional numbers with denominator 42
2. For the 1st fraction, since 21 × 2 = 42,
   42/21 = 42 × 2/21 × 2 = 84/42
3. Likewise, for the 2nd fraction, since 6 × 7 = 42,
   90/6 = 90 × 7/6 × 7 = 630/42
4. Add the two like fractions:
   84/42 + 630/42 = 84 + 630/42 = 714/42
5. 714/42 simplified gives 17/1
6. So, 42/21 + 90/6 = 17/1

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