Question

Tentukan nilai x yang memenuhi persamaan |x+2|+|2x-1|=5

Answer 1

Verified answer

|x + 2| + |2x - 1| = 5
x + 2 + 2x - 1 = 5
x + 2x + 2 - 1 = 5
3x + 1 = 5
3x = 5 - 1
3x = 4
x = 4/3
x + 2 + 2x - 1 = -5
x + 2x + 2 - 1 = -5
3x + 1 = -5
3x = -5 - 1
3x = -6
x = -2
HP = {-2, 4/3}