連立方程式L1-加減法8(8問)
8x+15y=-16 10x-6y=13
解答○ ×答: x=12 y=-43
12x-6y=7 8x+9y=-4
解答○ ×答: x=14 y=-23
4x-15y=12 14x+9y=1
解答○ ×答: x=12 y=-23
14x-18y=-15 6x-10y=-7
解答○ ×答: x=-34 y=14
-6x+15y=-2 10x+9y=-8
解答○ ×答: x=-12 y=-13
6x-6y=23 4x-9y=22
解答○ ×答: x=52 y=-43
8x-6y=-13 12x+4y=39
解答○ ×答: x=74 y=92
6x+15y=34 9x+12y=16
解答○ ×答: x=-83 y=103
問題と解答
8x+15y=-16 10x-6y=13 答: x=12, y=-43 12x-6y=7 8x+9y=-4 答: x=14, y=-23 4x-15y=12 14x+9y=1 答: x=12, y=-23 14x-18y=-15 6x-10y=-7 答: x=-34, y=14 -6x+15y=-2 10x+9y=-8 答: x=-12, y=-13 6x-6y=23 4x-9y=22 答: x=52, y=-43 8x-6y=-13 12x+4y=39 答: x=74, y=92 6x+15y=34 9x+12y=16 答: x=-83, y=103
