Answer:
x = 15
Step-by-step explanation:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
3-(x-12)=0
Solve : -x+15 = 0
Subtract 15 from both sides of the equation :
-x = -15
Multiply both sides of the equation by (-1) : x = 15
