Решим уравнения.
г) $$-m = -6\frac{3}{8} + 5\frac{1}{8};$$
$$ -m = - \frac{51}{8} + \frac{41}{8};$$
$$ -m = - \frac{10}{8};$$
$$ -m = - \frac{5}{4};$$
$$ -m = -1\frac{1}{4};$$
$$ m = 1\frac{1}{4}.$$
Ответ: $$m = 1\frac{1}{4}$$
д) $$-k = 11 + (-12,3);$$
$$ -k = 11 - 12,3;$$
$$ -k = -1,3;$$
$$ k = 1,3.$$
Ответ: $$k = 1,3$$
e) $$-y = -13 + (-8\frac{5}{12});$$
$$ -y = -13 - 8\frac{5}{12};$$
$$ -y = -21\frac{5}{12};$$
$$ y = 21\frac{5}{12}.$$
Ответ: $$y = 21\frac{5}{12}$$