x+45.3-20.7=32.8

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!)+.