Jadi jawaban no. 11. C dan 12. D
Maaf kalau salah
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8x-20+12 = 6x+8-4
8x - 6x = 20-12+8-4
2x = 12
x = 6
nilai 3a-2
= 3(6)-2
= 18-2
=16
Jadi jawaban no. 11. C dan 12. D
Maaf kalau salah