連立A=B=C-1

連立A=B=C-1(8問)

x+2y+4 = 5x+4y-4 = 9

解答○ ×
答: x=1  y=2

2x+y+3 = 2x+4y = 0

解答○ ×
答: x=-2  y=1

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

解答○ ×
答: x=-3  y=-2

3x = 5x-3y+2 = 15

解答○ ×
答: x=5  y=4

3x+2y+4 = 4x-y+14 = 7

解答○ ×
答: x=-1  y=3

-4x-2y+3 = 7x+y-21 = -3

解答○ ×
答: x=3  y=-3

2x+2y-1 = -3x-2y-11 = -7

解答○ ×
答: x=2  y=-5

5x+4y-2 = x+3y-9 = -19

解答○ ×
答: x=-1  y=-3
next

問題と解答

x+2y+4 = 5x+4y-4 = 9答: x=1,  y=2 2x+y+3 = 2x+4y = 0答: x=-2,  y=1 -x+2y = 3x-4y = -1答: x=-3,  y=-2 3x = 5x-3y+2 = 15答: x=5,  y=4 3x+2y+4 = 4x-y+14 = 7答: x=-1,  y=3 -4x-2y+3 = 7x+y-21 = -3答: x=3,  y=-3 2x+2y-1 = -3x-2y-11 = -7答: x=2,  y=-5 5x+4y-2 = x+3y-9 = -19答: x=-1,  y=-3

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