Question

быстро даю 30 балов лвоаоволвла​

Answer 1

$\left \{ {{-2x-y=-8}|*4 \atop {8x-4y=14}} \right. \\\\+\left \{ {{-8x-4y=-32} \atop {8x-4y=14}} \right. \\--------\\-8y=-18\\\\y=2,25\\\\2x=8-y=8-2,25=5,75\\\\x=5,75:2=2,875\\\\Otvet:\boxed{2,875 \ ; \ 2,25)}$