tentukan nilai x atau himpunan penyelesaian dari |4x+7|=-12

•|4x+7| = -12
=> 4x + 7 = -12
=> 4x = -12 - 7
=> 4x = -19
=> x = - 19/4
•|4x+7| = 12
=> 4x + 7 = 12
=> 4x = 12 - 7
=> 4x = 5
=> x = 5/4
Himpunan penyelesaian adlah
X1 = -19/4, X2= 5/4