Question

Найдите корень уравнений

Answer 1

16)
$frac{1}{3x - 5} = 1 \ 3x - 5 = 1 \ 3x = 1 + 5 \ 3x = 6 \ x = 2$
17)
$frac{1}{5x + 1} = 5 \ 5x + 1 = frac{1}{5} \ 5x = frac{1}{5} - 1 = - frac{4}{5} \ x = - frac{4}{25}$
18)
$frac{1}{10x - 9} = 5 \ 10x - 9 = frac{1}{5} \ 10x = 9 + frac{1}{5} = frac{46}{5} \ x = frac{46}{50} = frac{23}{25}$
19)
$frac{1}{2x + 3} = 5 \ 2x + 3 = frac{1}{5} \ 2x = frac{1}{5} - 3 = - frac{14}{5} \ x = - frac{14}{10} = - frac{7}{5}$