ubahlah bentuk nilai mutlak |2x+1|=10 sesuai definisi yaitu

|2x+1| = 10
definisi 1.=> (2x+1) = 10
2x = 10-1
2x = 9
x = 9/2
definisi 2, => -(2x+1) = 10
2x +1 = -10
2x = -10-1
2x = -11
x = -11/2