name: Andrew, I am struggling with this problem: Could you please help me work out the value of x where: y = zx  x  c thanks a lot Andrew Hi Andrew,
I am assuming that it is the lack of numbers in this problem that is causing you difficulties. I suggest that you replace z and c by numbers and see if you can solve the problem. Don't use the numbers 0, 1 or 2 but numbers like 3, 4, 5, ... I am going to let z = 3 and c = 7 and y = 5. Then the equation becomes
What I see here is 3x  x which is 2x and hence 5 = 2x  7 Now can you mimic the steps I just went through but with z, c and y in the equation?
As before, what I see is zx  x which is (z  1)x and hence y = (z  1)x  c Penny
