Tentuka persamaan. 6x + 7y =13 5x + y =-1 2x-4y=14 x+2y=-13 3x-4y=-5 2x+y = 4

jawab no(1).
mencari x. mencari y.
6x+7y=13| x1 6x+7y=13 |x5
5x+y=-1 | x7 5x+y= -1 |x6
---------------- --------------
6x+7y=13 30x+35y=65
35x+7y=-7 30x+6y=-6
--------------- + -------------- -
41x = 6 29y=59
x= 6/41 y=59\29

jawab no(2).
mencari x mencari y
2x-4y=14 | x1 2x-4y=14
x+2y=-13 | x2 x+2y=-3
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2x-4=14
2x+4=-26
---------------- +
4x= -2
x= -2/4