Answers

Add 70/18 and 84/40

1^st number: 3 16/18, 2^nd number: 2 4/40

70/18 + 84/40 is 539/90.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 40 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 18 × 20 = 360,
   70/18 = 70 × 20/18 × 20 = 1400/360
3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
   84/40 = 84 × 9/40 × 9 = 756/360
4. Add the two like fractions:
   1400/360 + 756/360 = 1400 + 756/360 = 2156/360
5. 2156/360 simplified gives 539/90
6. So, 70/18 + 84/40 = 539/90
   In mixed form: 589/90

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