Tentukan himpunan penyelesaian dari A.lx+2l=2 B.l3x+1l=4

A.
|x + 2| = 2
x + 2 = 2
x = 2 - 2
x = 0

-|x + 2| = 2
-x - 2 = 2
-x = 2 + 2
-x = 4
x = 4/-1
x = - 4

HP {-4,0}

B.
l3x + 1l = 4
3x + 1 = 4
3x = 4 - 1
3x = 3
x = 1

-l3x + 1l = 4
-3x - 1 = 4
-3x = 4 + 1
-3x = 5
x = 5/-3

HP {5/-3, 1}

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