50/(x+2)=40/(x-2)
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50/(x+2)=40/(x-2)50/(x+2)=40/(x-2)50/(x+2)=40/(x-2)两边乘(x+2)(x-2)50x-100=40x+8010x=180x=1850/(x+2)=40
50/(x+2)=40/(x-2)
50/(x+2)=40/(x-2)
50/(x+2)=40/(x-2)
两边乘(x+2)(x-2)
50x-100=40x+80
10x=180
x=18
50/(x+2)=40/(x-2)
5（x-2)=4(x+2)
5x-10=4x+8
5x-4x=8+10
x=18
x+3x+x-2+x+x+50%x=188 求x
x+40=2x x=?
50/(x+2)=40/(x-2)
2x-4*(40-x)=50
2(40—x)=50+x
当2x=30x 3x=40x 4x=50x时 那么
(x+1)+(x+2)+(X+3).+(x+50)=1325
f(x)=x^2+x (x
x(23-2x)=40顺便还有x(23-2x)=50
x^2=x
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x{x+1}{x-1}}x-2}{x-3}-40
x/x平方-x+2=2x/x+1
f(x)=x|x|+2x (x
(X+1)X(X+2)X(X+3)=504
0.01=50X+40000X^2 40=20X-2X^2 X分别是多少~
0.01=50X+40000X^2 40=20X-2X^2 X分别是多少~