Question

Срочно АЛГЕБРА ДАМ 50 БАЛІВ​

Answer 1

$ax + 2y = 4 \\ 3x + cy = 5 \\ \\ a \times 1 + 2 \times 8 = 4 \\ 3 \times 1 + c \times 8 = 5 \\ \\ a = - 12 \\ 8c = 2 \\ \\ a = - 12 \\ c = \frac{1}{4}$