(0.6x+420)除以(x+20)=3
X除以(X-80)=3
x除以(x-3) -2=-3除以(3-x)
解方程:(3x+2)除以5-(x-6)=x除以3
1-(0.7+3x)除以0.8=(0.3x-1)除以0.4-x
(3.8-x)除以7=3除以28
解方程 X除以(X-2) + (X-9)除以(X-7) = (X+1)除以(X-1) +(X-8)除以(X-6)
(2/3)除以x+(1/3)除以(x-5)=1除以(x-3) ,
1除以x-1 - (除以x-2)等于1除以x-3-(1除以x-4)
解方程:x除以0.05除以2=(4500-x)除以0.02除以4
3X+(100-X)除以3=100
X-13=(X+15)除以3怎么算
4X-24=2X+20 2X(X-0.7)=4.8 0.6X+3X2.5=67.5 (X-7)除以3=8 5X-1.5X