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3x-2y = 4 => x dikalikan 2
____________________
6x+3y=15
6x-4y=8
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7y= 7
y=1
2x+y=5 => dikalikan 2
3x-2y=4 => dikalikan 1
____________________
4x+2y=10
3x-2y=4
____________________+
7x=14
x=2
jdi nilai x=2 dan nilai y=1