Question

помогите решить систему плз
2x+5=1-x + 2y
14x-5=9x-3y-2

Answer 1

$left { {{2x+5=1-x + 2y} atop {14x-5=9x-3y-2}} right. \ \ left { {{3x-2y=-4 |*(-5)} atop {5x+3y=3 |*3}} right. \ \ left { {{-15x+10y=20} atop {15x+9y=9}} right. + \ \ -15x+15x+10y+9y=20+9\ 19y=29\ y= frac{29}{19} \ \ 5x+3*frac{29}{19}=3\ 5x+frac{87}{19}=3 |*19\ 95x+87=57\ 95x=57-87\ 95x=-30\ x=-frac{30}{95}=-frac{6}{19}$
Ответ: $(-frac{6}{19}; frac{29}{19})$