Răspuns :
y=-7-2x
y=-7-2x
3x-4(-7-2x) = -5
y=-7-2x
3x+28+8x = -5 /-28
y=-7-2x
11x = -33 / : 11
y=-7-2x
x = -3
x=-3
y=-7-2×-3
x=-3
y=-7+6
x=-3
y=-1
S = {(-3;-1)}
y=-7-2x
y=-7-2x
3x-4(-7-2x) = -5
y=-7-2x
3x+28+8x = -5 /-28
y=-7-2x
11x = -33 / : 11
y=-7-2x
x = -3
x=-3
y=-7-2×-3
x=-3
y=-7+6
x=-3
y=-1
S = {(-3;-1)}