Question

ПОМОГИТЕ СРОЧНО!!!!!!!

Answer 1

Ответ:

$2x + 3y = 23 \\ (3y \times 4) - (2x \times 3) = 8 \\ 12y - 6x = 8 \\ 12y = 8 + 6x \\ y = \frac{8 + 6x}{12} = \frac{2(4 + 3x)}{12} = \frac{4 + 3x}{6} \\ 2x + 3 \times \frac{4 + 3x}{6} = 23 \\ 2x + \frac{4 + 3x}{2} = 23 \\ \frac{2x}{1} + \frac{4 + 3x}{2} = 23 \\ \frac{4x}{2} + \frac{4 + 3x}{2} = 23 \\ \frac{4 + 7x}{2} = 23 \\ 4 + 7x = 46 \\ 7x = 46 - 4 \\ x = 42 \div 7 \\ x = 6 \\ 2 \times 6 + 3y = 23 \\ 3y = 23 - 12 \\ y = 9 \div 3 \\ y = 3 \\ 3 + 6 = 9$