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Verified answer
Metode Eliminasi :Cari y
x - y = 3
x + 2y = 15
------------------ -
-3y = -12
y = 4
Cari x
x - y = 3 (x2)
x + 2y = 15 (x1)
-----------------------
2x - 2y = 6
x + 2y = 15
------------------------ +
3x = 21
x = 21/3
x = 7