Answers

Add 90/18 and 15/42

1^st number: 5 0/18, 2^nd number: 15/42

90/18 + 15/42 is 75/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 42 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 18 × 7 = 126,
   90/18 = 90 × 7/18 × 7 = 630/126
3. Likewise, for the 2nd fraction, since 42 × 3 = 126,
   15/42 = 15 × 3/42 × 3 = 45/126
4. Add the two like fractions:
   630/126 + 45/126 = 630 + 45/126 = 675/126
5. 675/126 simplified gives 75/14
6. So, 90/18 + 15/42 = 75/14
   In mixed form: 55/14

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