Answers

Add 20/90 and 4/45

20/90 + 4/45 is 14/45.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 45 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 90 × 1 = 90,
   20/90 = 20 × 1/90 × 1 = 20/90
3. Likewise, for the 2nd fraction, since 45 × 2 = 90,
   4/45 = 4 × 2/45 × 2 = 8/90
4. Add the two like fractions:
   20/90 + 8/90 = 20 + 8/90 = 28/90
5. 28/90 simplified gives 14/45
6. So, 20/90 + 4/45 = 14/45

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