Question

resultado da equação : log3 ( 2x + 1 ) - log3 ( 5x - 3 ) =- 1 é?

Answer 1

5+75-5+?^13=14e a resposta

Answer 2

veja

$log_3 (2x+1)-log_3 (5x-3)=-1$

$log_3 \frac{2x+1}{5x-3} =-1$

$3^-^1= \frac{2x+1}{5x-3}$

$\frac{1}{3} = \frac{2x+1}{5x-3}$

$3(2x+1)=5x-3$

$6x+3=5x-3$

$6x-5x=-3-3$

$x=-6$

S={-6}