Question

Пж решите систему уравнений

Answer 1

$1)+\left \{ {{x+y=8} \atop {x-y=2}} \right.\\ -------\\2x=10\\\\x=5\\\\y=8-x=8-5=3\\\\Otvet:\boxed{(5;3)}\\\\\\2)\left \{ {{3x+2y=32}|*(-2) \atop {7x+4y=74}} \right.\\\\+\left \{ {{-6x-4y=-64} \atop {7x+4y=74}} \right.\\ -------\\x=10\\\\2y=32-3x=32-3*10=32-30=2\\\\y=1\\\\Otvet:\boxed{(10;1)}$