Answers

Add 42/40 and 80/90

1^st number: 1 2/40, 2^nd number: 80/90

42/40 + 80/90 is 349/180.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 90 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 40 × 9 = 360,
   42/40 = 42 × 9/40 × 9 = 378/360
3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
   80/90 = 80 × 4/90 × 4 = 320/360
4. Add the two like fractions:
   378/360 + 320/360 = 378 + 320/360 = 698/360
5. 698/360 simplified gives 349/180
6. So, 42/40 + 80/90 = 349/180
   In mixed form: 1169/180

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