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Jawaban:

-2 + 3 | x + 1 | = 7

3| x + 1| -2 = 7

3| x + 1 | = 9

===== Pecahkan kasus Negatif ========

-3( x + 1 ) = 9

-3x – 3 = 9

-3x = 12

-3x/3 = 12/3

-x = 4

x = -4

===== Pecahkan kasus Positif ========

3( x + 1 ) = 9

3x + 3 = 9

3x/3 = 9/3

3x = 6

x = 2

======== Akhiran ========

x = –4

x = 2

Kunci Jawaban : D. –4,2