Answers

Add 90/54 and 20/15

1^st number: 1 36/54, 2^nd number: 1 5/15

90/54 + 20/15 is 3/1.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 15 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 54 × 5 = 270,
   90/54 = 90 × 5/54 × 5 = 450/270
3. Likewise, for the 2nd fraction, since 15 × 18 = 270,
   20/15 = 20 × 18/15 × 18 = 360/270
4. Add the two like fractions:
   450/270 + 360/270 = 450 + 360/270 = 810/270
5. 810/270 simplified gives 3/1
6. So, 90/54 + 20/15 = 3/1

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