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a) 6x-12 >_ 2x+4
6x -2x >_ 4+12
4x >_ 16
x >_ 16/4
x >_ 4
b) 4(x-4) < 2(3x-1)
4x-16 < 6x-2
4x-6x < -2+16
-2x < 14
dibagi -2 ,negatif tanda dibalik
-2x / -2 > 14/-2
x > -7
semoga membantu :)