Question

ОТДАЮ 65 БАЛЛОВ! ПОМОГИТЕ С 9 И 10 ЗАДАНИЕМ!!! ПРОШУУ, на фото...

Answer 1

$9) \left \{ {{\frac{2x-y}{3}-\frac{x-2y}{2}=\frac{3}{2} |\cdot6 } \atop {{\frac{2x+y}{2}-\frac{x+2y}{3}=\frac{1}{3}|\cdot6}} \right. \\\left \{ {4x-2y-3x+6y=9 } \atop {{6x+3y-2x-4y=2}} \right. \\\left \{ x+4y=9} \atop {4x-y=2}} \right. \\\left \{ x=-4y+9} \atop {4(-4y+9)-y=2}} \right. \\\left \{ x=-4y+9} \atop {-16y+36-y=2}} \right. \\\left \{ x=-4y+9} \atop {-17y=-34}} \right. \\\left \{ x=-4y+9} \atop {y=2 }} \right.$

$\left \{ x=-4\cdot2+9} \atop {y=2 }} \right. \\\left \{ x=1}} \atop {y=2 }} \right.$

10-е - на листике