6 2 2x 10 y 4x 20 2ySolutionAlthough the question does n

(6, -2) 2x = 10 - y 4x = 20 - 2y

Solution

Although the question does not have any details, it is presumed that a solution to the equations 2x = 10 – y..(1) and   4x = 20 - 2y..(2) is required. There is essentially only 1 equation as we get the 2^nd equation on multiplying the 1^st equation by 2. Then 2x = 10-y or, y = 10-2x. Thus, (x,10-2x) is the general solution, where x is an arbitrary number. Further, when x = 6, y = 10-2*6 = 10-12 = -2 so that the ordered pair (6,-2) is a solution.