Answers

Add 21/90 and 4/18

21/90 + 4/18 is 41/90.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 18 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 90 × 1 = 90,
   21/90 = 21 × 1/90 × 1 = 21/90
3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
   4/18 = 4 × 5/18 × 5 = 20/90
4. Add the two like fractions:
   21/90 + 20/90 = 21 + 20/90 = 41/90
5. So, 21/90 + 4/18 = 41/90

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