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連立A=B=C-4

連立A=B=C-4(8問)

2x+3y = -4x-y = -10x+7y+6

解答○ ×
答: x=13  y=-12

4x-2y = -8x-4y = 16x+3y-2

解答○ ×
答: x=-19  y=23

3y = 4x-6y+16 = 20x+6y

解答○ ×
答: x=-14  y=53

13x+2y+1 = -12x-13y-1 = x+3y

解答○ ×
答: x=6  y=-3

52x = -32y+9 = 12x-3y

解答○ ×
答: x=6  y=-4

-13x+1 = 29x-16y-12 = -89x-32y

解答○ ×
答: x=94  y=-32

32y+14 = -32x-34y-5 = 34x-14y

解答○ ×
答: x=-2  y=-1

12x-13y+12 = -32y-2 = 3x-72

解答○ ×
答: x=2  y=-3
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問題と解答

2x+3y = -4x-y = -10x+7y+6x=13, y=-12 4x-2y = -8x-4y = 16x+3y-2x=-19, y=23 3y = 4x-6y+16 = 20x+6yx=-14, y=53 13x+2y+1 = -12x-13y-1 = x+3yx=6, y=-3 52x = -32y+9 = 12x-3yx=6, y=-4 -13x+1 = 29x-16y-12 = -89x-32yx=94, y=-32 32y+14 = -32x-34y-5 = 34x-14yx=-2, y=-1 12x-13y+12 = -32y-2 = 3x-72x=2, y=-3

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