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Anonymous
I assume you are asking: z + 2 = 12
Then z would be 12-2=10
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(z + 15)(z + 3)
x=3 y=2 z=6
(2+x+y+6+z) += 9x,y and z are variables, there are 3.
-3y + z = 12
y=84-72=12 z=84-52=32 x=84-12-32=40