Answer:
x = 6 or -9
Explanation:
Solving absolute value equations:
I 2x + 3 I = 15
To solve the absolute value equations, set the absolute value expression to negative value and positive value, then solve both the equation.
2x + 3 = 15 or 2x + 3 = -15
Subtract 3 from both sides,
2x = 15 - 3 ; 2x = -15 - 3
2x = 12 ; 2x = -18
Divide by 2,
x = 12÷2 ; x = -18 ÷ 2
x = 6 ; x = -9