Question

How many solutions?

3x+9=21

A.
One solution

B.
No solutions

C.
Infinite solution

Answer 1

A. one solution

Explanation:

solve for X and the only possible answer would be 4 , so A

Answer 2

One solution

Explanation:

3x+ 9 = 21

3x = 21- 9

3x = 12

x = 12/3

x = 4

So, one solution