Question

Resolva as equações exponenciais
7²×-¹= 7×·7³

Answer 1

$7^{2x-1}=7^x*7^3\\ \\ 7^{2x-1}=7^{x+3}\\ \\ 2x-1=x+3\\ \\ 2x-x=3+1\\ \\ x=4$