Answers

Add 90/72 and 32/20

1^st number: 1 18/72, 2^nd number: 1 12/20

90/72 + 32/20 is 57/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 20 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 72 × 5 = 360,
   90/72 = 90 × 5/72 × 5 = 450/360
3. Likewise, for the 2nd fraction, since 20 × 18 = 360,
   32/20 = 32 × 18/20 × 18 = 576/360
4. Add the two like fractions:
   450/360 + 576/360 = 450 + 576/360 = 1026/360
5. 1026/360 simplified gives 57/20
6. So, 90/72 + 32/20 = 57/20
   In mixed form: 217/20

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