Using cramer's rule, what are the values of x and y in the system of linear equations below? ?

The value of x =-3 and y=1 in the system of linear equation.

Step-by-step explanation:

Given equations

-2x+3y+z=7

-4x-y-2z=15

x+2y+3z=-7

Using cramer's rule to find x and y

First we make matrix of coefficient of x,y and z and then find the determinant

Now we find determinant of A

|A|=-2(-3+4)-3(-12+2)+1(-8+1)

|A|=21

Determinant of Ax

|Ax|=7(-3+4)-3(45-14)+1(30-7)

|Ax|=-63

Determinant of Ay

|Ay|=-2(45-14)-7(-12+2)+1(28-15)

|Ay|=21

Determinant of Az

|Az|=-2(7-30)-3(28-15)+7(-8+1)

|Az|=-42

Now we find for x, y and z

Thus, The value of x =-3 and y=1 in the system of linear equation.

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8

income. 10x+1300

expenses 3x+(1800+1500)

expenses 3x+3300

to break even:

income = expense,

10x + 1300 = 3x + 3300,

solve for x.

step-by-step explanation:

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