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連立A=B=C-5

連立A=B=C-5(8問)

x+y+2 = -x-y+8 = 2x+3y-2

解答○ ×
答: x=2  y=1

2x+y+2 = x-2y+3 = 2x+3y+2

解答○ ×
答: x=1  y=0

2x+3y+1 = -3x+y-4 = 4x-y+3

解答○ ×
答: x=-1  y=0

2x+3y+2 = 3x-y+6 = -3x+3y+2

解答○ ×
答: x=0  y=1

x-y-1 = 4x-3y-1 = 2x+y-9

解答○ ×
答: x=2  y=3

3x-2y+3 = 2x-4y-4 = -x+2y+11

解答○ ×
答: x=-1  y=-3

-2x+y+4 = -3x-2y-1 = x+2y+11

解答○ ×
答: x=-2  y=-1

x+4y-3 = 2x+5y+1 = -3x+6y-1

解答○ ×
答: x=-1  y=-3
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問題と解答

x+y+2 = -x-y+8 = 2x+3y-2x=2, y=1 2x+y+2 = x-2y+3 = 2x+3y+2x=1, y=0 2x+3y+1 = -3x+y-4 = 4x-y+3x=-1, y=0 2x+3y+2 = 3x-y+6 = -3x+3y+2x=0, y=1 x-y-1 = 4x-3y-1 = 2x+y-9x=2, y=3 3x-2y+3 = 2x-4y-4 = -x+2y+11x=-1, y=-3 -2x+y+4 = -3x-2y-1 = x+2y+11x=-2, y=-1 x+4y-3 = 2x+5y+1 = -3x+6y-1x=-1, y=-3

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