Question

3^x-4-63=18

Answer 1

\(\text{3^x - 4 - 63 = 18}\)

\(\text{3^x - 4 = 18 + 63}\)

\(\text{3^x - 4 = 81}\)

\(\text{3^x - 4 = 3^4}\)

\(\Rightarrow\) \(\text{x = 4 + 4}\)

\(\Rightarrow\) \(\text{x = 8}\)

 

Answer 2

3^{x - 4} - 63 = 18

=> 3^{x - 4} = 81

=> 3^{x - 4} = 3⁴

=> x = 8

Vậy...

Answer 3

\(3^{x-4}-63=18\)

\(\Rightarrow3^{x-4}=81=3^4\)

\(\Rightarrow x-4=4\)

\(\Rightarrow x=8\)

Vậy, x=8

Answer 4

\(3^{x-4}-63=18\\3^{x-4}=18+63\\ 3^{x-4}=81=3^4\\ Vậy:x-4=4\\ Vậy:x=4+4=8 \)