Jawab:A)2x + 9 > 112x > 11 - 92x > 2x > 1HP: { 2,3,4...}B)17- x < 15-x < 15 - 17-x < -2------------------ : (-1)x > 2HP: {3,4,5...}C)4x - 9 < x - 34x - x < 9 - 33x < 3x < 1HP: {-2,-1,0...}D) 12 - 3x > 5x + 9-3x - 5x > -12 + 9-8x > 3------------- : (-1)8x < 3x < 3/8x < 0,37HP: {...,-3,-2,-1,0}
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Jawab:
A)
2x + 9 > 11
2x > 11 - 9
2x > 2
x > 1
HP: { 2,3,4...}
B)
17- x < 15
-x < 15 - 17
-x < -2
------------------ : (-1)
x > 2
HP: {3,4,5...}
C)
4x - 9 < x - 3
4x - x < 9 - 3
3x < 3
x < 1
HP: {-2,-1,0...}
D)
12 - 3x > 5x + 9
-3x - 5x > -12 + 9
-8x > 3
------------- : (-1)
8x < 3
x < 3/8
x < 0,37
HP: {...,-3,-2,-1,0}
Maaf kalau salah.