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5x-2y+19=0 --> 5x - 2y = -19
2x + 4y = 2 x1 2x + 4y = 2
5x - 2y = -19 x2 10x - 4y = -38
---------------- +
-12x = -36
x = 3
2x + 4y = 2
2.3 + 4y = 2
6 + 4y = 2
4y = 2- 6
4y = -4
y = -1
Maka, x + 4y = 3 + 4.-1 = 3 + -4 = -1
5x-2y+19=0 | x 2 | 10x - 4y + 38 = 0
-------------------------- -
24y - 48 = 0
24y = 48
y = 48/24
y = 2
2x+4y-2=0
2x + 4 (2) - 2 = 0
2x + 8 - 2 = 0
2x + 6 = 0
2x = -6
x = -6/2
x = -3
x+4y = (-3) + 4 (2) = (-3) + 8 = 5