⑴x=2,-(9x-4x+5)-(-3-8x+3x)=___
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⑴x=2,-(9x-4x+5)-(-3-8x+3x)=___
⑴x=2,-(9x-4x+5)-(-3-8x+3x)=___
⑴x=2,-(9x-4x+5)-(-3-8x+3x)=___
-6
-(9x-4x+5)-(-3-8x+3x)
=-9x+4x-5+3+8x-3x
=-x+x-2
=-2+2-2
=-8+4-2
=-6
-6
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
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⑴x=2,-(9x-4x+5)-(-3-8x+3x)=___
难倒爱因斯坦的九宫格X 7 X | X 8 1 | X X X |X X X | X 4 X | 7 5 9 |X X 5 | 7 X 9 | X 1 4 |5 X X | X X 8 | 3 9 X |3 9 6 | 4 X 7 | X X 2 |X 8 7 | 9 X X | X X X |4 X X | 6 X 5 | X X X | X X 4 | X X 1 |2 X X | X X X | X X X | X 3 X | X X X |X 6
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