Question

Помогите пожалуйста. . . .

Answer 1

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 2

$left { {{4x-y=-7} atop {x+3y=-5}} right. left { {{y=7+4x} atop {x+3(7+4x)=-5}} right. left { {{y=7+4x} atop {x+21+12x=-5}} right. left { {{y=7+4x} atop {13x=-26}} right. left { {{y=7+4(-2)} atop {x=-2}} right. \ left { {{y=-1} atop {x=-2}} right. \......................... \left { {{6y+3x=5} atop {5x+3y=-1}} right. left { {{3x+6y=5} atop {-10x-6y=2}} right. \-7x=7\x=-1\6y-3=5\6y=8\y= frac{4}{3}$