SOLUTION: I have to graph points on a graph with this linear programming problem: 16X-13Y=79 I know that the plotting points are (9,5) but how did they get this answer?

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Question 657572: I have to graph points on a graph with this linear programming problem:
16X-13Y=79 I know that the plotting points are (9,5) but how did they get this answer?
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
16x-13*5=79
16x-65=79
16x=79+65
x=144/16
x=9