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X - 2Y= 16
________ -
3Y = -12
Y = -4
X = 8
Maka HP { 8,-4}
3X + Y =1 (x 3) ------> 9X + 3Y= 3
2X - 3Y=8 (x 1) ------> 2X - 3Y=8
__________+
11X =11
X= 1-----> 3X+ Y=1
3(1) + Y =1
Y=-2
Maka HP { 1,-1}
x + y = 4
x - 2y = 16
------------------- -
3y = -12
y = -4
x + y = 4 | x2
2x + 2y = 8
x - 2y = 16
------------------- +
3x = 24
x = 8
No. 2 =
3x + y = 1 | x 2
2x - 3y = 8 | x 3
6x + 2y = 2
6x - 9y = 24
-------------------- -
11y = -22
y = -2
3x + y = 1 | x 3
2x - 3y = 8 | x 1
9x + 3y = 3
2x - 3y = 8
-------------------- +
11x = 11
x = 1