P.153쪽 1.(1)y=-2x+1(2)y=x-2(3)y=2분의1x-4(4)y=2분의3x-1(5)y=3x-5(6)y=-x+5(7)y=4분의3x-3 2.y=-x-1 3.(1)y=x+4(2)y=3분의2x+2(3)y=-5분의7x+7
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