Question

Помогите пжжпжпжпж срочно времени нетт​

Answer 1

$\displaystyle \left \{ {{6x+y=1} \atop {2x-y=7}} \right. \\\\(6x+y)+(2x-y)=1+7\\8x=8\\x=1\\6*1+y=1\\y=-5\\(x,y)=(1,-5)$