The figure shows the flow of traffic (in vehicles per hour) through a network of streets. X1 400- 300- X2 (X1, X2, X3, X4, X5) = X4 X5 (a) Solve this system for x₁, i = 1, 2, 5. (If the system has an infinite number of solutions, express x1, X2, X3, ..* -600 100

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