Question

Помогите решить 6 очень прошу

Answer 1

$1); ; left { {{x=y} atop {y=7x-5}} right. ; left { {{x=y} atop {x=7x-5}} right. ; left { {{x=y} atop {6x=5}} right. ; left { {{y=frac{5}{6}} atop {x=frac{5}{6}}} right. \\\2); ; left { {{x+y=19} atop {y=7x-5}} right. ; left { {{y=19-x} atop {y=7x-5}} right. ; left { {{y=19-x} atop {19-x=7x-5}} right. ; left { {{y=19-x} atop {8x=24}} right. ; left { {{y=16} atop {x=3}} right.$