\(\frac{x}{6}=\frac{2}{9}\Rightarrow x=\frac{6.2}{9}\Rightarrow x=\frac{4}{3}\)
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\(\frac{x}{6}=\frac{2}{9}\Rightarrow x=\frac{6.2}{9}\Rightarrow x=\frac{4}{3}\)
tim x, y,biet:x-y= 2(x+y)=x:y
tim so huu ti x biet:x^2=x^5
tim x thuoc Q biet:x-2can bac 2 cua x=0
tim cac so nguyen x, y biet:x/4-1/y=1/2 (giai chi tiet gium nha ban!thanks!!!)
tim x,y biet:x-y/3=x+y/13=xy/200.
tim x,y,z biet:x/3=y/4,y/5=z/7 va 2x+3y-z=124
Tim x
a)y^2=4/9
b)(y-5/9)=4/9
c)(2/3x-1/4)^4=81/6
Tim x biet 4/15 +1/6-5/9 > 2/3-x-3/4
Ai dung 5 sao lun
tim x,y e N a) 2^1-x nhan 3^y = 6^x
b) 4^x = 16^y v 27^x = 9^y+2