Question

Решите способом сложения систему уравнений 4m-5n=1 2m-3n=2

Answer 1

см. файл
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Answer 2

$\left \{ {{4m-5n=1} \atop {2m-3n=2|*(-2)}} \right. \left \{ {{4m-5n=1} \atop {-4m+6n=-4}} \right. \left \{ {{n=-3} \atop {2m-3n=2}} \right. \left \{ {{n=-3} \atop {2m-3*(-3)=2}} \right. \left \{ {{n=-3} \atop {2m+9=2}} \right.$

$\left \{ {{n=-3} \atop {2m=2-9}} \right. \left \{ {{n=-3} \atop {m=-7:2}} \right. \left \{ {{n=-3} \atop {m=-3,5}} \right.$