Respuesta :
Answer:
36
Step-by-step explanation:
X equals 12, substitute X for 12
3(12)=36
					                   answer: 36
3(12) =36
[insert the value of x which is 12 into where x is in the expression]
					                
					                
					             3(12) =36
[insert the value of x which is 12 into where x is in the expression]
