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(1) 5x+ y = 10
y = 10 - 5x
(2) 4x - 2y = -6
4x - 2(10-5x) = -6
4x - 20 + 10x = -6
4x+10x - 20 = -6
14x = -6 + 20
14 x = 14
x = 1
(1) 5x + y = 10
5(1) + y = 10
5 + y = 10
y = 10 -5
y = 5
metode eliminasi
5x + y = 10 (x2) 10x + 2y = 20
4x-2y = -6 (x1) 4x - 2y = -6
______________+
14 x = 14
x = 1
5x + y = 10 (x4) 20x + 4y = 40
4x - 2y = -6 (x5) 20x - 10y = -30
______________-
14y = 70
y = 5
Jadi selesaiannya (x.y) = (1,5)