Даю 10 баЛЛов решите пж

Ответ:

Опять ты

Объяснение:

$5a + 8b = 20\\5a = 20 - 8b\\a = \frac{20 - 8b}{5} \\a = 4 - 1,6b$

$\left \{ {{-0,2k = 15} \atop {k + m = -2}} \right.$

$\left \{ {{-0,2k = 15} \atop {k = -m-2}} \right.$

$\left \{ {{-0,2(-m-2) = 15} \atop {k = -m-2}} \right.$

$\left \{ {{0,2m + 0,4 = 15} \atop {k = -m-2}} \right.$

$\left \{ {{2m + 4 = 150} \atop {k = -m-2}} \right.$

$\left \{ {{2m = 146} \atop {k = -m-2}} \right.$

$\left \{ {{m =73} \atop {k = -75}} \right.$