Question

Реши систему уравнений методом подстановки.

Answer 1

Ответ:

t = 2.4

k = 4.4

$2k + 3t = 16 = > k = \frac{16 -3t}{2} \\ 3k + 2t = 18 \\ \frac{3}{2} (16 - 3t) + 2t = 18 \\ 48 - 9t + 4t = 36 \\ 5t = 12 \\ t = \frac{12}{5} = 1.4 \\ k = \frac{16 - \frac{36}{5} }{2} = 8 - 3.6 = 4.4$