Answers

Add 90/72 and 42/90

1^st number: 1 18/72, 2^nd number: 42/90

90/72 + 42/90 is 103/60.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 90 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 90 × 4 = 360,
   42/90 = 42 × 4/90 × 4 = 168/360
4. Add the two like fractions:
   450/360 + 168/360 = 450 + 168/360 = 618/360
5. 618/360 simplified gives 103/60
6. So, 90/72 + 42/90 = 103/60
   In mixed form: 143/60

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