連立A=B=C-3(8問)
x+4 = 3x+4y = 2y+2
解答○ ×答: x=0 y=1
y = x+4y-2 = 2x+3y
解答○ ×答: x=-1 y=1
2x+3y+1 = 3x+y = 2x-2y-14
解答○ ×答: x=-5 y=-3
4x+3y = 2x+7y = -3x+4y+26
解答○ ×答: x=4 y=2
x-y+3 = 5x-8y = 4x-18
解答○ ×答: x=6 y=3
3x-2y = 5x+8 = 2y+9
解答○ ×答: x=-1 y=-3
8x = -3x-2y+20 = x+y+15
解答○ ×答: x=2 y=-1
2x+4y = x+3y-4 = 3x-2y-17
解答○ ×答: x=-1 y=-3
問題と解答
x+4 = 3x+4y = 2y+2答: x=0, y=1 y = x+4y-2 = 2x+3y答: x=-1, y=1 2x+3y+1 = 3x+y = 2x-2y-14答: x=-5, y=-3 4x+3y = 2x+7y = -3x+4y+26答: x=4, y=2 x-y+3 = 5x-8y = 4x-18答: x=6, y=3 3x-2y = 5x+8 = 2y+9答: x=-1, y=-3 8x = -3x-2y+20 = x+y+15答: x=2, y=-1 2x+4y = x+3y-4 = 3x-2y-17答: x=-1, y=-3
