What is the value of a when (a-12)x=a+8

Ineed i been stuck on this question since yesterday

For the feasibility region shown below find the maximum value of the function p=3x+2y

Which of the following transformations will make coincide with ? a. counter-clockwise rotation 90º about a, followed by a translation 5 units to the right b. translation 5 units to the right, followed by a reflection across the y-axis c. translation 5 units to the right, followed by a reflection across the x-axis d. translation 1 unit up and 5 units to the right, followed by a reflection across the x-axis