Question

помогите!!! срочно!!! ПЖ ПЖ ПЖ!!!! Даю 25 баллов​

Answer 1

Пошаговое объяснение:

$a) \\ 1.x + 3y = 10 \\ x = 10 - 3y \\ 2.x + y = 2 \\ x = 2 - y \\ 3.2x + 7y = 8 \\ 2x = 8 - 7y \\ x = 4 - 3.5y \\ 4.6x - 5y = 4 \\ 6x = 4 + 5y \\ x = \frac{4 + 5y}{6} = \frac{2}{3} + \frac{5}{6} y$

$b) \\ 1.x + 3y = 10 \\ 3y = 10 - x \\ y = \frac{10}{3} - \frac{x}{3} \\ 2.x + y = 2 \\ y = 2 - x \\ 3.2x + 7y = 8 \\ y =\frac{8 - 2x}{7} = \frac{8}{7} - \frac{2}{7} x \\ 4.6x - 5y = 4 \\ y = \frac{6x - 4}{5} = \frac{6x}{5} - \frac{4}{5}$