HELP ASAPP

Create equivalent expressions in the equation that all have equal bases, then solve for x.

x=20

Work: 3^5=243

3x=243^4

(3^5)^4=243^4

3^20, which leads to x=20.

Hope this helps, whymenotsmart^m^

You can try to factor 243 out.

$3^x=243^4\\ 3^x=(3^5)^4\\\ 3^x=3^{20}\\ \boxed{x=20}$