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x-4x = -6-6
-3x = -12
3x = 12
x = 12/3
x = 4
Menganggap,
Itu 2x-4 mungkin,
2x-4 = 2(4)-4 = 8-4 = 4
X-4X= -6-6
-3X = -12
X= -12:-3
X= 4
2X-4= 8-4
=4