Question

Помогите пожалуйста, срочно надо) ​

Answer 1

7.

$log_{5}(135) - log_{5}(5.4) = log_{5}(135 \div 5.4) = log_{5}(25) = 2$

8.

$log_{0.5}(3x - 117) = - 3$

$log_{0.5}(3x - 117) = log_{0.5}(8)$

$3x - 117 = 8$

$3x = 125$

$x = 41 \frac{2}{3}$