5.5x+21-x=50-4.5x
(X+X)+(X-X)+(X*X)+(X/X)=100
6.3+4.5x=36.3-5.5x
解方程:x+50%x=4.5
8x+5x=1.3 4.5x-3.2x=3.9 5.5x-x=9.9 11x-7x-26=34 列方程
x+24=4.5X
(2x-1)/(x-1)(x-2)=(x-5)/(x-2)(x-3) x/2x^2-11x-21=(x+7)/x^2-1
x+x=x+15
x除55%=100 60%x=30 x+50%x=4.5 (1-25%)x=72 4x+40%x=176 解方程
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
|x|
x