Respuesta :
49^x=7
make bases same
{(7)^2}^x=(7)^1
(7)^2x=(7)^2
bases are same so powers are equal
2x=1
x=1/2
make bases same
{(7)^2}^x=(7)^1
(7)^2x=(7)^2
bases are same so powers are equal
2x=1
x=1/2