連立方程式L2-小数1(8問)
0.1x+0.2y=-0.3 2x-3y=8
解答○ ×答: x=1 y=-2
1.2x-2.6y=8.8 5x+9y=-3
解答○ ×答: x=3 y=-2
0.4x-1.5y=1.9 1.5x+y=0.5
解答○ ×答: x=1 y=-1
1.4x-0.9y=-6 0.5x-1.2y=-3.9
解答○ ×答: x=-3 y=2
-1.4x+1.5y=-1.7 2.3x+0.9y=-7.3
解答○ ×答: x=-2 y=-3
0.6x+0.5y=1 0.3x-0.1y=1.9
解答○ ×答: x=5 y=-4
4.2x-3.1y=12.8 2.7x+4.2y=33
解答○ ×答: x=6 y=4
1.2x-1.5y=-9.6 0.8x-1.2y=-7.2
解答○ ×答: x=-3 y=4
問題と解答
0.1x+0.2y=-0.3 2x-3y=8 答: x=1, y=-2 1.2x-2.6y=8.8 5x+9y=-3 答: x=3, y=-2 0.4x-1.5y=1.9 1.5x+y=0.5 答: x=1, y=-1 1.4x-0.9y=-6 0.5x-1.2y=-3.9 答: x=-3, y=2 -1.4x+1.5y=-1.7 2.3x+0.9y=-7.3 答: x=-2, y=-3 0.6x+0.5y=1 0.3x-0.1y=1.9 答: x=5, y=-4 4.2x-3.1y=12.8 2.7x+4.2y=33 答: x=6, y=4 1.2x-1.5y=-9.6 0.8x-1.2y=-7.2 答: x=-3, y=4
