Question

1 va rog dau coroana
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Answer 1

a) { 7x - 3y = 1

{ 4x - y = 3

{7*1 - 3*2 = 1

{4*1 - 2 = 3

7 - 6 = 1

4 - 2 = 3 => Fals

b) {-2x + y = 0

{6x - 3y = 0

{-2*1 + 2 = 0

{6*1 - 3*2 = 0

-2 + 2 = 0

6 - 6 = 0 => Adevărat

c) {5x - 4y = 3

{-3x + y = -1

{5*1 - 4*2 = 3

{-3*1 + 2 = -1

5 - 8 = 3

-3 + 2 = -1 => Fals