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5x+2y=4
-2x=y
x=-1
2x+3y=12
penyelesain
3x+4y=17 (x2) 6x+8y=34
2x+3y=12 (x3) 6x+9y=36 -
-y=-2
y=2
3x+4(2)=17
3x+8=17
3x=17-8
3x=9
x= \frac{9}{3} [/tex]=3