Правило Крамера.
3 -2 4
Δ = 1 5 -1 = -15 +8 +4 -(40 -6 +2) = -3 - 36 = -39
2 2 -1
8 -2 4
Δх = 7 5 -1 = -40 +56 +2 -( 40 -16 +14) = 18 -18 = 0
1 2 -1
3 8 4
Δу = 1 7 -1 = -21 +4 -16 -( 56 -3 -8) = -33 - 45 = -78
2 1 -1
3 -2 8
Δz = 1 5 7 = 15 +16 -28 -( 80 +42 -2) = 3-120 = -117
2 2 1
x = Δх/Δ = 0
у = Δу/Δ = 2
z = Δz/Δ = 3
Ответ:(0; 2 ; 3)