Question

СРОЧНО!!! Решите систему двух уровнений

Answer 1

$\left \{ {{\frac{p+1}{5u-4}=\frac{1}{2}} \atop {\frac{5u+p}{3u+6}=1}} \right. \rightarrow \left \{ {{2p-5u=-6} \atop {p+2u=6\: |\: *(-2)}} \right. \rightarrow \left \{ {{2p-5u=-6} \atop {-2p-4u=-12}} \right. \rightarrow \left \{ {{p=2} \atop {u=2}} \right. \\\\-9u=-18\\\; \; \; u=2\\\\p+2*2=6\\p=2\\\\Otvet: (p,u)=(2,2)$