(3x-1)/2=(4x+2)/5+1
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(3x-1)/2=(4x+2)/5+1
(3x-1)/2=(4x+2)/5+1
(3x-1)/2=(4x+2)/5+1
(3x-1)/2=(4x+2)/5+1
两边乘以10
5(3x-1)=2(4x+2)+10
15X-5=8X+4+10
移项
15X-8X=4+10+5
7X=19
X=19/7
解九宫格题目(X为未知数)9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1
*-----------------------------------------------*| 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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