連立方程式L2-小数3(8問)
0.4x+1.5y=-2.8 2x-1.3y=3.6
解答○ ×答: x=12 y=-2
2.1x-y=3.3 5.1x+0.7y=-4.5
解答○ ×答: x=-13 y=-4
0.2x-3.2y=2.6 0.4x+0.2y=1.9
解答○ ×答: x=5 y=-12
1.2x+0.8y=-3.4 0.3x-2.8y=-1.6
解答○ ×答: x=-3 y=14
-1.2x+2.4y=4.8 1.4x+0.8y=-0.2
解答○ ×答: x=-1 y=32
3.6x+2.5y=-2.6 -2.4x+2y=-5.6
解答○ ×答: x=23 y=-2
0.6x+0.2y=-1.3 10.4x-9.8y=4
解答○ ×答: x=-32 y=-2
1.02x-1.15y=-0.81 0.18x-1.02y=-0.96
解答○ ×答: x=13 y=1
問題と解答
0.4x+1.5y=-2.8 2x-1.3y=3.6 答: x=12, y=-2 2.1x-y=3.3 5.1x+0.7y=-4.5 答: x=-13, y=-4 0.2x-3.2y=2.6 0.4x+0.2y=1.9 答: x=5, y=-12 1.2x+0.8y=-3.4 0.3x-2.8y=-1.6 答: x=-3, y=14 -1.2x+2.4y=4.8 1.4x+0.8y=-0.2 答: x=-1, y=32 3.6x+2.5y=-2.6 -2.4x+2y=-5.6 答: x=23, y=-2 0.6x+0.2y=-1.3 10.4x-9.8y=4 答: x=-32, y=-2 1.02x-1.15y=-0.81 0.18x-1.02y=-0.96 答: x=13, y=1
