Answers

Add 90/18 and 32/21

1^st number: 5 0/18, 2^nd number: 1 11/21

90/18 + 32/21 is 137/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 21 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 21 × 6 = 126,
   32/21 = 32 × 6/21 × 6 = 192/126
4. Add the two like fractions:
   630/126 + 192/126 = 630 + 192/126 = 822/126
5. 822/126 simplified gives 137/21
6. So, 90/18 + 32/21 = 137/21
   In mixed form: 611/21

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