連立方程式L1-加減法3(8問)
x+4y=14 2x-5y=-11
解答○ ×答: x=2 y=3
4x+y=3 7x+3y=4
解答○ ×答: x=1 y=-1
2x-5y=16 4x+7y=-2
解答○ ×答: x=3 y=-2
5x-3y=-7 11x+6y=-28
解答○ ×答: x=-2 y=-1
8x-3y=-18 2x+5y=-16
解答○ ×答: x=-3 y=-2
-7x+y=-11 3x-10y=-24
解答○ ×答: x=2 y=3
-6x+5y=19 x-2y=-9
解答○ ×答: x=1 y=5
-6x+5y=40 3x-4y=-23
解答○ ×答: x=-5 y=2
問題と解答
x+4y=14 2x-5y=-11 答: x=2, y=3 4x+y=3 7x+3y=4 答: x=1, y=-1 2x-5y=16 4x+7y=-2 答: x=3, y=-2 5x-3y=-7 11x+6y=-28 答: x=-2, y=-1 8x-3y=-18 2x+5y=-16 答: x=-3, y=-2 -7x+y=-11 3x-10y=-24 答: x=2, y=3 -6x+5y=19 x-2y=-9 答: x=1, y=5 -6x+5y=40 3x-4y=-23 答: x=-5, y=2
