Question 854648
y=2x+7 ...................................................... (1)
y=9x+8 ...................................................... (2)

From (1),
         x= (y-7)/2
Substituting value of x in eqn (2) we get,

y= 9.(y-7)/2 + 8
y = (9y-63+18)/2
2y=9y-45
9y-2y=45
7y=45
y=45/7
x=(45/7-7)/2=45-49/14=-4/14=-2/7
Reqd. Soln. : x = -2/7
              y = 45/7