2(3x-1)-3(x-1)=x+7
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2(3x-1)-3(x-1)=x+72(3x-1)-3(x-1)=x+72(3x-1)-3(x-1)=x+72(3x-1)-3(x-1)=x+76x-2-3x+3=x+73x+1=x+73x-x=7-
2(3x-1)-3(x-1)=x+7
2(3x-1)-3(x-1)=x+7
2(3x-1)-3(x-1)=x+7
2(3x-1)-3(x-1)=x+7
6x-2-3x+3=x+7
3x+1=x+7
3x-x=7-1
2x=6
x=3
x/2-3x-1/3=1
-5/2x=4/3
x=-8/15
4x-3(20-x)=6x-7(9-x)
7x-60=15x-63
8x=3
x=3/8
1/2(x-1/2(x-1))=2/3x-1
1/4x+1/4=2/3x-1
5/12x=2
x=5/24
3/2(2/3(x/4-1)-2)-x=2
-3/4x-2=2
x=-16/3
x/0.7-0.17-2x/0.03=1
10/7x-17/100-200/3x=1
-1370/21x=83/100
x=-1743/137000
步骤是先去括号,再合并同类项
6x-2-3x+1=x+7
3x-1=x+7
2x=8
x=4
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
请问这道题咋做 :(x)X (x+1) X (x+2) X (x+3) =360
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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
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方程 3x(7-2x)+5x(2x-1)=4x(x-3)+56
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