August 2023 1 3 Report
Perhatikan sistem persamaan linear berikut. [tex] \begin{cases} ax+y+2z &\!\!\!\!= 5 && (...1) \\ bx-y+3z &\!\!\!\!=3 && (...2) \\ cx+y+z &\!\!\!\!=-1 && (...3) \end{cases} [/tex]
Jika [tex] a+b=7 [/tex] dan [tex] a+c=5 [/tex], maka nilai [tex] 12x+8z=... [/tex]​

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