C-12-Q131mediumsingle_mcqIf x+y=4x + y = 4x+y=4 and x−y=2x - y = 2x−y=2, then (x,y)=(x, y) =(x,y)= —a(2,4)(2, 4)(2,4)b(4,2)(4, 2)(4,2)c(3,1)(3, 1)(3,1)d(1,3)(1, 3)(1,3)ব্যাখ্যাAdding the equations gives 2x=62x = 62x=6, so x=3x = 3x=3, and then y=1y = 1y=1. Thus (x,y)=(3,1)(x, y) = (3, 1)(x,y)=(3,1).