Answers

Add 40/90 and 42/12

1^st number: 40/90, 2^nd number: 3 6/12

40/90 + 42/12 is 71/18.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 12 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 90 × 2 = 180,
   40/90 = 40 × 2/90 × 2 = 80/180
3. Likewise, for the 2nd fraction, since 12 × 15 = 180,
   42/12 = 42 × 15/12 × 15 = 630/180
4. Add the two like fractions:
   80/180 + 630/180 = 80 + 630/180 = 710/180
5. 710/180 simplified gives 71/18
6. So, 40/90 + 42/12 = 71/18
   In mixed form: 317/18

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