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1)
2x- 4 < 6 - 7x
9x < 10
x < 10/9
..
6-7x < 3x + 6
-7x - 3x < 0
-10x < 0
x > 0
...
0 < x < 10/9
2x-10<7x<3x masing-masing di kurangi 7x
-5x-10<0<-4x
-5x-10<0<-4x
10 < 5x< x
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