Question

розвязати систему способом підстановки {5×-6y=1 {3×+4y=12

Answer 1

………………………………..............

Answer 2

5x - 6y = 1

3x + 4y = 12

5x - 6y = 1

4y = -3x + 12

5x - 6y = 1

y = -0,75x +3

5x - 6(-0,75x + 3) = 1

5x + 4,5x - 18 = 1

9,5x = 19

x = 2

6 + 4y = 12

y = 1,5

Ответ:(2; 1,5)