Answers

Add 84/12 and 40/45

1^st number: 7 0/12, 2^nd number: 40/45

84/12 + 40/45 is 71/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 45 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 12 × 15 = 180,
   84/12 = 84 × 15/12 × 15 = 1260/180
3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
   40/45 = 40 × 4/45 × 4 = 160/180
4. Add the two like fractions:
   1260/180 + 160/180 = 1260 + 160/180 = 1420/180
5. 1420/180 simplified gives 71/9
6. So, 84/12 + 40/45 = 71/9
   In mixed form: 78/9

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