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2x + 4y = -2
3x - y - 11 = 0
3x - y = 11
3x - y = 11
12x - 4y = 44
12x - 4y = 44
2x + 4y = -2__+
14x = 42
x = 42 / 14
x = 3
2x + 4y = -2
2(3) + 4y = -2
6 + 4y = -2
4y = -2 -6
4y = -8
y = -8/4
y = -2
x1 + y1 = 3 + (-2)
= 3 - 2
= 1
3x-y-11=0
2x+4y=-2
3x-y=11
6x+12y=-6
6x-2y=22
__________-
10y=-16
y=1,6
x=2x+4(1.6)=
x=2x+6,4=-2
x=2x=-2-6,4
2x=8,4
x=4,2
maka x+y=1,6+4,2=5,8