If x =a, y = b is the solution of the equations x -y = 2 and x + y = 4, then the values or a and b are, respectively
(a) 3 and 5
(b) 5 and 3
(c) 3 and 1
(d) -1 and-3
Solution:
(c) 3 and 1
The solution of the system of equations 4/x + 5y = 7 and 3/x + 4y = 5 is
(a) x=1/3, y=-1
(b) x=-1/3, y=1
(c) x=3, y =-1
(d) x=-3,y=1
Solution:
(a) x=1/3, y=-1
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