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Verified answer
A. x - 2y =62x + y = -4 yang atas dikali dua supaya x nya= bisa sama
2x-4y =12
2x+y= -4 kemudia ditambah
-3y =8
y= 8/-3
x-2y=6
x-2(8/-3)=6
x+16/3=6
x=6*3/16
x= 18/16
x=9/8
b. 3x+2y=12
x+2y=4
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2x= 8
x= 8/2
x= 4
x+2y=4
4+2y=4
2y=4+4
2y=8
y=8/2
y= 4