Question

{x + 3y = 12
{14x + 2y = -18 решите уравнение плиззз​

Answer 1

{x+3y=12

{14x+2y=-18

x=12-3y

14*(12-3y)+2y=-18

168-42y+2y=-18

168-40y=-18

-40y=-18-168

-40y=-186

y=-186/(-40)

y=4,65

x=12-3*4,65

x=12-13,95

x=-1,95