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Pembahasan
1/2(x+15) = 3/4(x-2)+5/4
Kalikan ruas kiri dan kanan dengan 4
kita dapatkan
2(x+15) = 3(x-2)+5
2x+30 = 3x-6+5
2x+30 = 3x-1
2x -3x = -1 -30
-x = -31
x = 30
Sehingga nilai
9-x = 9-30 = -21
Jawab
Jika 1/2(x+15) = 3/4(x-2)+5/4 , maka nilai (x-9) adalah -21.
@Wello1
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