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Solve for the unknown using a method of your choice. a. 511x+23 = 125 7x [3 marks] b. 2? 123 [3 marks] = C.

Solve for the unknown using a method of your choice. a. 511x+23 = 125 7x [3 marks] b. 2? 123 [3 marks] = C. 3x+5 + 3x = 177876

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