Question

Resolvendo o sistema
Logx+logy=5
Logx-logy=7

Answer 1

{Logx+logy=5 ====> logy=5 -logx
{Logx-logy=7
--------------------- (+)
2Log x = 12
Log x = 6
x = 10^6 ✓

logy=5 -logx
logy=5 -6
logy= -1
y = 10^-1 ✓