Ответ(ы) на вопрос:
Гость[latex] \left \{ {{2x+5x=36} \atop {2x-5y=-44}} \right. [/latex]
[latex] \left \{ {{x= \frac{36}{7} } \atop {2x-5y=-44}} \right. [/latex]
[latex]2 * \frac{36}{7} - 5y = -44 y = \frac{76}{7} [/latex]
[latex](x,y) = ( \frac{36}{7}, \frac{76}{7}) [/latex]
[latex] \left \{ {{2 * \frac{36}{7}+5 * \frac{36}{7} = 36 } \atop {2 * \frac{36}{7} - 5 * \frac{76}{7} = -44 }} \right. [/latex]
[latex] \left \{ {{36=36} \atop {-44=-44}} \right. [/latex]
Ответ: [latex](x,y)=( \frac{36}{7}, \frac{76}{7}) [/latex]
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