Question

The root of 3 + 2x = 9 is x = 3

Answer 1

Answer:

13.5

Step-by-step explanation:

$\sqrt{3+2x}=9$

squring both sides

$\sqrt{3+2x}^2=9^{2}$

3 + 2x = 81

2x = 81 ÷ 3

2x = 27

x = 27 ÷ 2

x = 13.5