Question

помогите пожалуйста ​

Answer 1

$\displaystyle\bf\\\left \{ {{5(x + 2) = 2y + 22} \atop {7(x - 4) - 6(y + 2) = 28 }} \right. \\ \displaystyle\bf\\\left \{ {{5x + 10 - 2y = 22} \atop {7x - 28 - 6y - 12 = 28}} \right. \\ \displaystyle\bf\\\left \{ {{5x - 2y = 12 \: \: | \times (- 3)} \atop {7x - 6y = 68 }} \right. \\ \displaystyle\bf\\ + \left \{ {{ - 15x + 6y = - 36} \atop {7x - 6y = 68 }} \right. \\ \\ - 15x + 7x = 68 - 36 \\ - 8x = 32 \\ x = 32 \div ( - 8) \\ x = - 4 \\ \\ 5 \times ( - 4) - 2y = 12 \\ - 20 - 2y = 12 \\ 2y = - 20 - 12 \\ 2 y= - 32 \\ y = - 32 \div 2 \\ y = - 16$

Ответ: ( - 4 ; - 16 )