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Jawaban:

45. jawab :

3x – 5 < 5x + 1

3x – 5x < 1 + 5

-2x < 6

x > 6/-2

x > -3 (B)

51. jawab :

2x + 3 < 5x – 6

2x – 5x < -6 – 3

-3x < -9

x > -9/-3

x > 3 (B)