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= 12x -9y +2x +4y
= 12x +2x -9y +4y
= 14x -5y
2. -5(x +2) +2(3x -2)
= -5x -10 +6x -4
= -5x +6x -10 -4
= x -14
Itu jawabannya.
12x+2x-9y+4y
=14x-5y
2.-5x-10+6x-4
-5x+6x-10-4
1x-14