`a=4c`
`c=re`
`a=5e`
For the system of equations above, if `ene0`, what is the value of r?

2x − y = 8 x + 2y = 4 For the system of equations above, what is the value of x + y ?

If (x,y) is a solution to the system of equations above, what is the value of x ^(2) ?

-7X+2Y=18 ltBRgt X+Y=0 In the system of equation above, what is the value of x ?

3c-4d=-11 4c-3d=-3 If (c, d) is a solution of the system of equations above, what is the value of c-d?

(1)/(2)r-(1)/(3)s=8 (5)/(8)r-(1)/(4)s=29 For the system of equations above, what is the value of r+s?

k=a-b+12,k=b-c-17,k=c-a+11 In the system of equations above, what is the value of k?

y=x^2-4,x+y=2 Based on the system of equations above , what is the minimum value of the product xy ?

2c+3d=17 6c+5d=39 In the system of linear equations above. What is the value of 4c-4d?

3a-7b=4d-9 -4c+10a=6b+7 -2a+3c-4d=10 Given the system of equation above, what is the value of -10a-2b+2c ?