Question 196426
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(1) *[tex \LARGE \ \ \ \ \ \ \ \ \ \ c + z = 13]


(2) *[tex \LARGE \ \ \ \ \ \ \ \ \ \ 2c + 4z = 34]


Multiply (1) by -2:


(3) *[tex \LARGE \ \ \ \ \ \ \ \ \ \ -2c - 2z = -26]


Add (3) to (2):


(4) *[tex \LARGE \ \ \ \ \ \ \ \ \ \ 0c + 2z = 8]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \ \ \ z = 4]


Substitute 4 for *[tex \LARGE z] in (1):


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \ \ \ c + 4 = 13]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \ \ \ c = 9]


John
*[tex \LARGE e^{i\pi} + 1 = 0]
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