Question

solve the following simultaneous equations by Cramers rule: y = 5x-10 upon 2 and 4x+y=5​

Answer 1

Answer:

The given system of linear equations in two variables is

5x - y - 10 = 0

4x + y - 5 = 0

So, the coefficient determinant of this system is

| 5 -1 |

| 4. 1 |. = 9

And,

Coefficient determinant of x

is = -5(-1)+10(1) = +15

And,

Coefficient determinant of y = -5(5)-(-10)(4) = -5

So,

By Cramer's Rule hence,

x = Coefficient determinant of x / Coefficient determinant = -15/9 = -5/3

And,

y = Coefficient determinant of y / Coefficient determinant = -5/9

So, this is the solution to the given system of linear equation.

x = 5/3 and y = -5/9.

Hope this helps you !

Answer 2

Answer:

(x,y)=0,5 is the correct answer

I hope it helps

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