<PRE><B>Question 226118</B>
#1 

3 ( x-2 ) = 18 
3x-6=18
3x -6 + 6 =18+6
3x = 24
3x/3 = 24/3
x = 8

plug in x ( 8 ) 

3 ( 8-2 ) = 18 
3 ( 6 ) =18
3 * 6 = 18
18=18


#2 

12 ( 2-x ) = 6 
24 - 12x = 6
24-24 -12x =6 -24
-12x = -18 
-12x/-12=-18/-18
x = -18/-12

#3  9/2 (x+3) = 27
    9/2 times 2/9 ( x+3 ) = 27 times 2/9
         ( x+3 ) =6
          x+3-3 = 6-3
           x = 3

plug in 

9/2 ( 3+3) =27 
9/2 times 6 =27
27 = 27
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