Question

3^×+3^×-1+3^×+1=13 gostaria da resposta

Answer 1

Resposta:

3^(x)*[1+1/3+3]=13

3^(x)*[3/3+1/3+9/3]=13

3^(x)*[13/3]=13

3^(x)*[1/3]=1

3^(x)=3¹

x=1