Question

Solve 3x−5 = 9. x = −3 x = 2 x = 7 x = 8

Answer 1

Solve 3x−5 = 9:

Add 5 to both sides, to isolate 3x on the left side: 3x = 5+9 = 14

Solve this for x: x = 14/3

Answer 2

Answer:

x = 7

Step-by-step explanation:

Convert 9 to base 3

9 = $3^{2}$

$3^{x-5}$ = $3^{2}$

if $a^{f(x)}$ = $a^{g(x)}$, then f(x) = g(x)

x - 5 = 2

x = 7