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7. Draw a network regarding the following linear programming problem. Minimize 4.x12 +3x13 +2x23 -2x42 +6x34+3x35 +3x64 +65 -4x75 +2x76 subject to X12+ X13

7. Draw a network regarding the following linear programming problem. Minimize 4.x12 +3x13 +2x23 -2x42

7. Draw a network regarding the following linear programming problem. Minimize 4.x12 +3x13 +2x23 -2x42 +6x34+3x35 +3x64 +65 -4x75 +2x76 subject to X12+ X13 -12 +*23

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