Question

for what value of the c the liner equation 2 X + cY =8 has equal value of x and y for its solution

Answer 1

2x+cy=8........(i)
x=y..........(ii)
putting the value from (ii) in (i)
2x+cx=8
x(2+c)=8
2+c=8/x
c=8/x-2
ANSWER...........