0
Anonymous
18.
9 x 0 = 0
S0, 9 + 0 + 9 = 18
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Anything multiplied by 0 is zero, so 9 multiplied by 0 is 0.
9+9+9+9 = 36
If I am correct, 9 plus 7 equals 112.
9+9+9+9+9+9+9=63
9 plus 7 equals 144. Generally, x plus y = x(x+y).