x-30=1/5x-2
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x-30=1/5x-2x-30=1/5x-2x-30=1/5x-2x-30=1/5x-2x-(1/5)x=-2+30(4/5)x=28x=35x-30=1/5x-25x-150=x-104x=140x
x-30=1/5x-2
x-30=1/5x-2
x-30=1/5x-2
x-30=1/5x-2
x-(1/5)x=-2+30
(4/5)x=28
x=35
x-30=1/5x-2
5x-150=x-10
4x=140
x=35
x-2/5x-(x-2/5x)2/3-(2/5x-1/3x)=30求x
*-----------------------------------------------*| 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 ||
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
x(x-2)-2x(x+1)-3x(x-5) 其中x=负½
(x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3)
x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x
f(x,-x)=x^2+2x,fx(x,-x)=5x+1,则fy(x,-x)=
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 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
x*x+2x+x*x+10x+x*x+25+2x+x*x+1+1+16+x*x+4x*x+9-12x+16x*x+4-16x=30x*x-7x-15 求x,可以只要答案.如图,全是正方形,一个边长为1,一个边长为4,求总面积,你也可以用你的方法.上面那个方程是我列的.5x*X+7X-72=0
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x-30=1/5x-2
x-30=1/5x-2
2x(x-1)-x(2x-5)=15
5/x^2+x - 1/x^2-x=0
X-5+8*X=7*X-2*X-1
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已知x=2π+1求 |x-1|+|x-2|+|x-3|+|x-4|+|x-5|+|x-6|+|x-7|+|x-8|+|x-9|+|x-10|