x+45.3-20.7=32.8
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x+45.3-20.7=32.8
x+45.3-20.7=32.8
x+45.3-20.7=32.8
8.2
x+45.3-20.7=32.8
(X+X)+(X-X)+(X*X)+(X/X)=100
20.7-2x=3.14x
x*x*x*x*x=80000?
7.8x÷36=20.7.8x-4x=2x+3.6
方程X+0.6X=15.6 4(18-x)=32.8 9x=30+6x
4:x=8:6 4x=32.8-4x 3x+10=2x+30 解方程
8x^2(x+3)-8x(x+1)^2=8x^2-32.8x^2(x+3)-8x(x+1)^2=8x^2-32
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!)+.