Oblicz układ równań sposobem podstawiania. 2(3x + y) = (-10) 2x + 3y = 6

2(3x + y) = (-10) 2x + 3y = 6 6x+2y= -10 x=3-3/2y 6(3-3/2y)+2y= -10 x=3-3/2y 18-9y+2y= -10 x=3-3/2y 18-7y= -10 x=3-3/2y -7y=-28 x=3-3/2y y=4 x=3-3/2*4 y=4 x= -3

6x+y= -10 2x+3y=6 y= -10-6x 2x+3*(-10-6x)=6 y=-10-6x 2x-30-18x=6 y=-10-6x -16x=36 y=-10-6x x=-2,25 y=-10-6*(-2,25) x=-2,25 y=-10+13.5 x=-2,25 y=3,5