Question

plzz ans my ques
2x-3y-z=0, x+3y-2z=0, x-3y=0 using determinate (cramer's rule) solve. ​
​

Answer 1

Answer:

follow me

Explanation:

fhlfhbvas4 I am safia and

Answer 2

Answer:

Example 4. Solve this system of simultaneous equations:

1) 3x + 4y = 19

2) 2x − y = 9

Solution. If we add the equations as they are, neither one of the unknowns will cancel. Now, if the coefficient of y in equation 2) were −4, then the y's would cancel. Therefore we will expand our strategy as follows:

Make one pair of coefficients negatives of one another -- by multiplying

both sides of an equation by the same number. Upon adding the equations, that unknown will be eliminated.

To make the coefficients of the y's 4 and −4, we will multiply both sides of equation 2) by 4 :

1) 3x + 4y = 19 simultaneous equations 3x + 4y = 19

2) 2x − y = 9 simultaneous equations 8x − 4y = 36

simultaneous equations

11x = 55

x = 55

11

x = 5

The 4 over the arrow in equation 2) signifies that both sides of that equation have been multiplied by 4. Equation 1) has not been changed.

To solve for y, substitute x = 5 in either one of the original equations. In