5|x+7|-2=18 Tolong dibantuu yaa

Bab Nilai Mutlak
Matematika SMA Kelas X

5 |x + 7| - 2 = 18
5 |x + 7| = 18 + 2
|x + 7| = 20 : 5
|x+ 7| = 4

x + 7 = 4
x = 4 - 7
x = -3

x + 7 = -4
x = -4 - 7
x = -11

5|x+7|-2= 18
5x+35-2= 18. 35 dari 5x7
5x+33= 18
5x= 18-33
5x= -15
x= -3