Question

3^x-4-63=18

Answer 1

\(\Leftrightarrow3^{x-4}=81\)

=>x-4=4

hay x=8

Answer 2

3^x-4=18+63

3^x-4= 81=3⁴

x=8

Answer 3

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

Answer 4

`3^x-4 - 63 = 18`

`3^x-4  = 18 + 63`

`3^x-4 =81`

`3^x-4 = 3^4`

`=> x =4 + 4`

`x = 8`