2(x-4)+ 2x=7-(x-1)
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2(x-4)+2x=7-(x-1)2(x-4)+2x=7-(x-1)2(x-4)+2x=7-(x-1)2x-8+2x=7-x+12x+2x+x=7+1+85x=16x=3.22(x-4)+2x=7-(
2(x-4)+ 2x=7-(x-1)
2(x-4)+ 2x=7-(x-1)
2(x-4)+ 2x=7-(x-1)
2x-8+2x=7-x+1
2x+2x+x=7+1+8
5x=16
x=3.2
2(x-4)+ 2x=7-(x-1)
2x-8+2x=7-x+1
2x+2x+x=7+1+8
5x=16
x=5分之16
*-----------------------------------------------*| 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 ||
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x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
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(x-2)(x+1)(x+4)(x+7)=19
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