The answer is x = 4
Step 1: Simplify both sides of the equation. 
3 /2 (x−6)=−3 
( 3 /2 )(x)+( 3 /2 )(−6)=−3(Distribute) 
3 /2 x+−9=−3 
3 /2 x−9=−3 
Step 2: Add 9 to both sides. 
3 /2 x−9+9=−3+9 
3 /2 x=6 
Step 3: Multiply both sides by 2/3. 
( 2 /3 )*( 3 /2 x)=( 2 /3 )*(6) 
x=4 
Answer: 
x=4