SOLUTION: Solve for x. P(x-1)+7= r(x-4)

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Question 208314: Solve for x.
P(x-1)+7= r(x-4)
Answer by nerdybill(6958) About Me  (Show Source):
You can put this solution on YOUR website!
P(x-1)+7= r(x-4)
Px-P+7= xr-4r
Px-xr-P+7= -4r
Px-xr+7= P-4r
Px-xr= P-4r-7
x(P-r) = (P-4r-7)
x = (P-4r-7)/(P-r)