3 X + 4 Y is equal to zero and 2 x minus 2 Y is equal to 2
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3x+4y=0
x +y =2
multiply by 3 for x+y=2
3x+4y=0
3x+3y=6
it becomes
y=-6 &x=8
x +y =2
multiply by 3 for x+y=2
3x+4y=0
3x+3y=6
it becomes
y=-6 &x=8
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