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Q: What is 18 plus 9 equals?

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18

the answer is 18

Yes it is 9+9=18

12 + 16 + 18 + 20 + 9 = 75

9 + 8 + 16 + 17 + 18 = 68

89

True. 9 + 8 + 1= 18 and 9 + 1 + 8 =18.

y= -9

18 - 9 - 3 + 5 = 1

27-9 =18. 18/3 =6

18. 9 x 0 = 0 S0, 9 + 0 + 9 = 18

9+9=18. The number is 9.

5x+18 = 2x+9 5x-2x = 9-18 3x = -9 x = -3 and y = 3

(3,21)

For n+9=18, the answer would be n=9 because n+9=18 also mean 18-9=n so 18-9=9

8x+9=9x-18+9 = 8x+9=9x-9 = 1x=0 (:

few errors in your title: 2 plus 4 = 6 6 plus 9 = 15 10 plus 25 = 35 18 + 81 = 99

18+(9*3) = 45

If: -2.5x+4.5y = 9 and -x+1.5 = 9 Then: x = -36 and y = -18

Negative 23 + 32 minus 18 = negative 9 {-23+32-18=-9)

72 but there is such a thing as a CALCULATOR

12 plus 9 equals 21.

9 plus 87 equals 96.

18

96