Nilai x
[tex]9x + 3 = 7x + 5 \\ 9x - 7x = 5 - 3 \\ 2x = 2 \\ x = 1 \\ \\ Panjang \: BD \\ 7x + 5 \\ 7(1) + 5 \\ 12 [/tex]
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Nilai x
[tex]9x + 3 = 7x + 5 \\ 9x - 7x = 5 - 3 \\ 2x = 2 \\ x = 1 \\ \\ Panjang \: BD \\ 7x + 5 \\ 7(1) + 5 \\ 12 [/tex]