Question

solve equation using cramers rule
x+y+z=6​

Answer 1

Answer:

Step-by-step explanation:

Δ=  

∣

∣

∣

∣

∣

∣

∣

∣

​

 

1

1

3

​

 

1

−1

2

​

 

1

1

−4

​

 

∣

∣

∣

∣

∣

∣

∣

∣

​

=1(4−2)−1(−4−3)+1(3+2)=14

Δ  

x

​

=  

∣

∣

∣

∣

∣

∣

∣

∣

​

 

6

2

−5

​

 

1

−1

2

​

 

1

1

−4

​

 

∣

∣

∣

∣

∣

∣

∣

∣

​

=6(4−2)−1(−8+5)+1(4−5)=14

Hence by cramer rule,

x=  

Δ

Δ  

x

​

 

​

=1