8.4x-x= 0.12
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8.4x-x=0.128.4x-x=0.128.4x-x=0.128.4x-x=0.127.4x=0.12x=0.01621621621621621621621621621622162是无限循环.8.
8.4x-x= 0.12
8.4x-x= 0.12
8.4x-x= 0.12
8.4x-x=0.12
7.4x=0.12
x=0.01621621621621621621621621621622
162 是无限循环.
8.4x-x=0.12
7.4x=0.12
x=0.01621621621621621621621621621622
j8.4x-x= 0.12
(8.4-1)x=0.12
7.4x=0.12
x=0.0162
8.4x-x= 0.12
7.4x=0.12
x=0.0162
8.4x-x= 0.12
（X+X)+(X-X)+(X*X)+(X/X)=100
x-x*40%=8.4
x*x*x*x*x=80000?
x*x*x=504 x*x*x=504
（x+x）+(x-x)+(x/x)=11.2
f(x)=x,x
x+x=x+15
X(X-1)=X
180=( )x( )x( )x( ) ×( )
(x+30)*(x-18)=x*x
x+ x+(x*50%)=1.5X?
f(x)=x^2+x (x
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
X+0.12x+(18-x)( 1+10%)=20
0.2(0.2-x)/0.01+1.2x=0.12+20x
解方程 8.4x+x=1.2（3+x）
8.4x-2.8x+6=80.8-1.2x