Question

Помогите плииииз...по алгебре

Answer 1

$5^{-19-13-n}=5^{-1}$

$5^{-32-n}=5^{-1}$

-32-n = -1

n = 31;

Answer 2

${5}^{ - 19} \times {5}^{ - 13} \div {5}^{n} = {5}^{ - 1} \\ - 19 - 13 - n = - 1 \\ n = 31$