Question

For what value of c, the linear equation 2x + cy = 8 has equal values of x and y for its solution?

Answer 1

Answer:

When C=0, x=y=4.

Step-by-step explanation:

If c=0,

2*4 +0*4=8

8+0=8

:. 8=8

Answer 2

Answer:

Step-by-step explanation:

If x=y

2x + cx = 8

x(2+c) = 8

2+c = 8/x

c = 8/x- 2

If x=1 then c=8/1 - 2 =6

2x+6y = 8 (x=1,y=1)

If x=2 then c=8/2-2 = 2

2x + 2y = 8 (x=2,y=2)