Best Answer

Expressed as a proper fraction in its simplest form, 3/15 + 12/18 = 13/15 or thirteen fifteenths. Expressed as a decimal, this is equal to 0.86 recurring (that is, 0.86666...)

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Q: What is 3 over 15 plus 12 over 18?

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It is: (15+18)+12 = 45

-12 + 18 - (-15) = -12 + 18 +15 = 21

2/12 + 4/18 = 7/18

-12

4/9 = 8/18 5/6 = 15/18 8/18 + 15/18 = 23/18

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It is: (15+18)+12 = 45

-12 + 18 - (-15) = -12 + 18 +15 = 21

2/3 + 1/9 + 5/6 = 12/18 + 2/18 + 15/18 = 29/18 = 111/18

(15+3)/(15-3) = 18/12 = 9/6 = 3/2

2/12 + 4/18 = 7/18

15/18 × 12/5 = 2/1 or 2

3 + 3 = 6 6 x 3 = 18 18 - 3 = 15 15 + 3 = 18

5/12:7/18= (5/12)/(7/18)= (5/12)*(18/7)= 15/14

-12

4/9 = 8/18 5/6 = 15/18 8/18 + 15/18 = 23/18

3+6+9+12+15+18+21+24+27+30+33+36 = 234

12 over 18