(x÷5×4-40)-40%x=32
1. x+0.5x=6 4x+16=40 x/5=32% x-4/9x=10/21 x-1/8x=5/8 7x÷2=2.
X=几?5X-4=40 5(X-4)=40 (48-3X)÷3=0 X+5X-7
x+3/20x=46 ,x-1/5x=40 ,x-1/2x=3/4 ,x-0.2x=18解方程
2x(7-3x)+5x(2x+1)=x(4x-3)+32
1/4x+5+1/2【x-(1/4x+5)】-5+40=x
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
5x÷8-3x=40 7x-8=42+3x 9x+7-3x=9x-3
x/x-4 - 32/x的平方+16=1 x+1/x + 5X/x+1=6
解方程 x-5%x=38 32%X+40X=21.6 50-125%X=37.5
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
2x+3x+4x+5x+x+6x+7x=100
(X/80+X/100 +5)*40=X,