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(2x+4 - 3x +5)/(x-1) ≤ 0
(-x +9)(x-1) ≤ 0 dengan x # 1
-x +9 = 0 --> x = 9
x -1 = 0 ---> x = 1
dgn uji garis bilangan
.- - .-..(1) ..+++..(9). - - -...
.
x < 1 atau x ≥ 9