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4x - 5x > 10 - 3+12 -2
-x > 17----> keua ruas dikali -1, tanda pertidaksamaan berubah
x< -17
HP { -18,-19.dst}
4x-10 > 5x + 7
4x-5x > 10 + 7
-1x > 17
x < 17/ -1
x < -17