8(x一2)=2(x+7)
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8(x一2)=2(x+7)8(x一2)=2(x+7)8(x一2)=2(x+7)8x-16=2x+146x=30x=5
8(x一2)=2(x+7)
8(x一2)=2(x+7)
8(x一2)=2(x+7)
8x-16=2x+14
6x=30
x=5
8(x一2)=2(x+7)
7x十2(3x一3)=20 2(x+8)=3x一1
求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X
3x方一[7x一3(4x一3)一2x方]
3x平方一(7x一(4x一3)一2x平方)
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x
(2x一3)一2(7一x)
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一40x(0.15-8分之7+3又2分之1) (一25)x(一85)x(一4)
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