Answer:
x=1/2, y=-2. (1/2, -2).
Step-by-step explanation:
4x-2y=6
y=-2x-1
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4x-2(-2x-1)=6
4x+4x+2=6
8x+2=6
8x=6-2
8x=4
x=4/8
simplify
x=1/2
y=-2(1/2)-1
y=-2/2-1
y=-1-1
y=-2
