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