Question

x+y+z=9
2x + 5y +7z=52
2x + y - z=0 solve by using Cramer's rule​

Answer 1

In solving the following equations by Cramer's rule x + y + z = 9 2x + 5y + 7z = 52 2x + y - z = 0 ,the values Δ1 , Δ2 , Δ3 are in the ratio

Answer 2

Answer:

Here's how you can use Cramer's method to solve the system of equations you provided:

x + y + z = 9

2x + 5y + 7z = 53

2x + y - z = 0

| 1 1 1 | |x| | 9|

| 2 5 7 | |y| = |53|

| 2 1 -1 | |z| | 0|

(1*(5*(-1))-1*(1*(-1))+1*(27))-(1(2*(-1))-1*(27)+1(51))+(1(25)-1(11)+1(2*1)) = -13

| 9 1 1 |

|53 5 7 |

| 0 1 -1 |

= (9*(5*(-1))-1*(53*(-1))+1*(07))-(9(2*(-1))-1*(57)+1(531))+(9(25)-1(10)+1(0*1))