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a = x-y =13
x = 13+y ....1
5x -3y= 19
5(13+y) - 3y = 19
65 + 5y -3y = 19
19 - 65 = 5y -3y
- 46 = 2y
-23 = y
dimisalkan x = 0 & y = 0 dimisalkan x = 0 & y = 0
0 - 2y = 1 0 + 5y = 4
y = -1/2 (0, -1/2) y = 4/5 (0;4/5)
3x - 2y = 1 -x + 5y = 4
3x - 0 = 1 -x + 0 = 4
x = 1/3 (1/3 ; 0) x = -4 (-4;0)
HP.nya dicari melalui gmbar ;))